Ontario Arborist

Transcription

Ontario Arborist

Ontario Arborist
The leading tree care publication in the province • july/august 2012
Emerald
Ash Borer
facts & quick tips
bare root transplanting
nathan phillips square
toronto
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2
Brampton
Edmonton
Calgary
800-668-9065
800-809-5066
866-809-6653
• www.isaontario.com
Saskatoon
Winnipeg
800-809-5066 866-548-1866
www.vermeercanada.com
Montreal
800-990-7919
ed lehming, arborist day of service
Ontario Arborist
The leading tree care publication in the province
Main Feature: An EAB Fact Sheet
On the agenda...
23
In 2013, ISAO hosts the world
of arboriculture in Toronto at
the annual summer international
conference. The next year will be
a busy one for our chapter. Stay
informed with our progress &
please consider lending a hand.
Writer Pat Kerr provides a comprehensive summary of the
current status of the invasive (regulated areas, treatment,
research, etc.) with an emphasis on where to go when you
need specific information. See pages 23-25.
Visit www.isaontario.com for more.
matt logan
Columns & Other Arborist Articles
in the field with matt logan. A look at work-related musculoskeletal
disorders (MSDs) and some pro-active ways to reduce and alleviate
them. Flip forward to pages 14-16 for the full article.
cover: eab “galleries,” daniel herms, the ohio state university, bugwood.org
4
Education Update: Dr. Gilman Back in Ontario This Fall
5
President's Message: It's All About Respect
7
International News: Portland Just Around The Corner
8
Bits & Chips: The American Chestnut Returns to New York
11
OTCC: Stihl Signs on as Official Event Sponsor
12
What's Bugging Your Trees? Are You Watering Enough?
17
Bare Root Transplanting: An Interesting Urban Project
27
Tree of Heaven: Spring CANUFNET Discussion Item
30
From The Ground Up: Meet Chris Timperon
32
Canadian TREE Fund: Spotlight on Summer & Fall Events
Ontario Arborist. July/August 2012. Volume 40 (4).
Ontario Arborist (July/August 2012) •
3
ISA ONTARIO (ISAO) INC.
NOTE: We Moved in July!
7856 Fifth Line South
Milton, Ontario L9T 2X8
416-493-7022, 1-888-463-2316
Fax: 416-493-4608
Email: [email protected]
ISAO Web: www.isaontario.com
ISA Web: www.isa-arbor.com
ISAO BOARD
President - Linda Hawkins
President Elect - Rory Quigley
Vice President - Jake Zink
Past President - Steven Mann
Directors - Heidi Breen,
Laura Catalano, Mike Nash,
Colleen MacDonald, Rachel
Micsinszki, John Ransom
& Dalton Sproule
International Rep: Alastair Fyfe
NEWSLETTER & WEB LIAISONS
Colleen MacDonald
John Wilson
EDITORIAL & GRAPHIC DESIGN
Joy Black, New Paradigm
519-371-6818
[email protected]
ADVERTISING OPPORTUNITIES
Please direct all inquiries for web
& newsletter advertising to Joy Black
at New Paradigm. Ad sizes/rates
are on www.isaontario.com.
LETTERS TO THE EDITOR
We welcome letters of comment and
information on any arboricultural or
ISA issue. Submissions may be
edited for length and readability.
ISSN 1198-6832
The Ontario Arborist is published bi-monthly
by the Ontario Chapter of the International
Society of Arboriculture (ISAO). The newsletter
is prepared for the benefit of Chapter members.
Views expressed are those of the writers and
do not necessarily reflect the opinion of ISAO
or its directors. ISAO is not endorsing the use
of products mentioned and no discrimination is
intended towards similar products. Permission
from Joy Black at NPC is required to reprint
articles. This newsletter is printed on recycled
paper. All inks are recycled when discarded.
4
ISAO Education Update
Heidi Breen
Dr. Gilman Returns This September
2012 Fall Workshop Series. In partnership with the City of Ottawa,
the National Capital Commission and Agriculture and Agri-Food
Canada, and the City of London, we are looking forward to bringing you two theoretical and practical pruning workshops with Dr.
Ed Gilman. They will be held on September 12 and 14 in Ottawa
and London respectively.
F
ollowing an extremely well-received presence at our February
conference, Dr. Gilman will return
to Ontario this fall. Ed is a professor who travels internationally to
work with arborists, consultants, landscape contractors, tree nursery operators,
urban foresters, planners, architects and
others engaged in tree selection, growing and planting. Dr. Gilman’s research
includes irrigation, fertilization, roots
Canada Central Experimental Farm, and
the September 14 th workshop will be
hosted at the Byron Community Centre
in the morning and Springbank Park,
near the 2012 Ontario Tree Climbing
Championship site, in the afternoon. Both
workshops are full day events. On-theground practical pruning sessions are to
be held in the afternoon of each workshop
to provide a practical overview of the
morning session.
Registration for ISAO’s fall seminar series with Dr. Ed
Gilman opened Monday, July 23rd. Stay tuned to our
website or call the office at 1-888-463-2316 for details.
and other tree transplant and after-care
techniques and a recent focus on tree
response to pruning.
Ed received his Ph.D. from Rutgers and
has been on faculty since 1984 as professor in the Environmental Horticulture
Department at the University of Florida
in Gainesville. Ed wrote the Illustrated
Guide to Pruning, now in its third edition.
He received the Authors Citation Award in
1999, the Educators Award in 2003, and
the Research Award in 2007 from ISA for
sustained excellence in research, publishing and teaching timely information on
tree care. He has published more than 95
scientific peer reviewed journal articles on
roots and pruning trees in his 30 years in
academia and industry.
The September 12th workshop will
be hosted at the Agricultural Agri-Food
Note that some driving may be required
and the number of seats is limited. Further
updates will be provided by email and on
the ISA Ontario Chapter website. If you
do not have access to the internet, please
contact the ISA Ontario Chapter office
by phone at 416-493-7022 or 1-888-4632316.
2013 Conferences
Next year will be a busy one for our chapter
with our own annual conference February
12-15 (Crowne Plaza Hotel, Niagara Falls)
as well as hosting the summer international
conference in Toronto. To actively support
the Education Committee and create and
foster strong educational learning opportunities, please forward your suggestions
to the ISA Ontario Chapter office at info@
isaontario.com. J
grand canyon
President’s Message
Linda Hawkins
RESPECT: Earn it, Give it & Enjoy it.
You either have it or you don’t. You either earn it or you continue to
work or play hard to gain it. The list of people I respect increases
on a regular basis. As an avid outdoor enthusiast in both work and
play, Mother Nature tops the list for the curveballs she sends and
the environments she creates. I am planning to see one of her most
spectacular creations next year when I go paddling in the Grand
Canyon. And as we all just worked through record-breaking temperatures this month, which brought with it fantastic storms, Mother
Nature continues to keep us on our toes.
I
respect people who continue to improve their level of knowledge through
attending classes or through online
courses and the fact that they find time
to work this into their busy lives to gain
the designation they desire. I respect those
who have become Board Certified Master
Arborists, as it is a tough test that I will try
again to pass this fall. And I respect those
who take that knowledge and are able to
share it with others and enjoy doing it.
These individuals can speak in front of
large groups and put their knowledge in a
format that keeps our attention and inspires
us to work smarter. I love to read and as
I write this article on a regular basis, I
respect those people who write easily and
articulate exactly what you need to know
without losing the point by going on and
on. I learn to write better everyday, right
Ken?!
Earlier this month, I was asked to
inspect some boxwoods on balconies in
Toronto. As I entered these spectacular
condominiums, I was awestruck by the
views of the city and the richness that surrounded me. It never ceases to amaze me
how the other half live and I always wonder
what they do for a living and how they
came to be able to live in such opulence.
Were they just lucky or did they gain the
respect of their peers and the knowledge
that enabled them to choose a course that
afforded them a life of what I consider to
be luxury? Fortunately these people also
choose to hire professionals to care for
their homes and gardens and that often
includes arborists. So I respect the clients
out there who hire arborists to do their
tree work because they respect what we
can do for them.
Respect also goes the other way. I do
not respect people who speak ill of others
regardless if they work for or with you or
for another company, or don’t do things the
way you would. I am talking about arriving
on a site where someone has done work
before you and it is different than the way
you would do it – not necessarily wrong,
just different. With this attitude tends to
come laying blame or not accepting blame
for something you did.
Respect for elders has been ingrained
in us since we were children. Respect for
other drivers (don’t forget to merge and
always signal) helps us on the road daily.
Respect for professionals such as athletes,
scientists, doctors and even lawyers (don’t
comment!) tends to typically be granted.
And I know we all respect people who
conquer challenges in their lives such as
debilitating injuries or illnesses and the
people who help them do this.
Finally, from one arborist to another, I
respect the career path you chose, that you
make this organization a part of your lives,
and the fact that you care for one of Mother
Nature greatest creations, TREES. In the
words of the Staple Singers, RESPECT
YOURSELF. J
CORRECTION
2012 May/June Issue
fleming climbing champ
In the May/June’s President’s Message, it was published that Matt
Howard was the climbing champion
at Fleming College. The 2012 Climbing Competition champion at SSFC
was in fact Mike Laende. Congratulations Mike and ISA Ontario hopes
to see you in London competing at
our OTCC on September 15th.
5
Your gear.
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to Arborists everywhere. With this expertise, you can rest assured that when you call looking for the
right gear, we’ll have knowledgeable and helpful technical sales professionals to help you. In fact, we
are the only professional supplier in the industry with a dedicated store to Arborists in Ontario.
Call Universal Field Supplies today!
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Or visit our convenient location, only 2 minutes from the 401,
just oﬀ Dixie Road in Mississauga.
Universal Field Supplies Inc.
#4 - 1540 Trinity Drive, Mississauga, ON L5T 1L6
6
There’s plenty to do and
see in and around Portland. Visit travelportland.
com for details. ISA has
also arranged for a variety
of tours from wine tasting
to Multnomah Falls and
Mt. Hood.
multnomah falls near portland, oregon
International News
Alastair Fyfe, ISAO Representative
Gearing Up For Portland, Aug. 11-15
It sure has been a busy year to date! International business has
been interesting to say the least. I was quite taken aback to hear
that Arboriculture Australia (AA) has lost their status as a Chapter;
effectively, they have had their Charter withdrawn and are out of ISA.
U
ntil a replacement organization
is located in Australia or International comes to an agreement
with AA, the International office
in Illinois will service individual
members. I am not speaking out of school
to mention this; ISA has been quite open
about the event, the steps taken to resolve
the issues and the policies in place to service existing members. The only reason I
mention it here is that it will no doubt make
for lively discussion at the Portland meeting. Many Ontario arborists know several
of the Australian members personally and
it is quite a dramatic turn of events, the
intimate details of which are known only
to the Board and no doubt they had cause.
Should you like to know more about
the situation, a detailed exchange of cor-
respondence is in the public domain on
Arboriculture Australia’s website which
can be found easily on search engines. And
I promise to report further developments,
if any, after the meeting in Portland where
all Chapter Representatives will meet
with the Board. It is a situation that will
hopefully be resolved sooner rather than
later and in a way that all parties can move
forward in an amicable manner.
When joining the Council of Representatives (or more accurately, extending
my term with them) I was pleased that
Craig Hallam from Australia was the Chair
as while he is very direct, I have always
viewed him as a “get the job done” kind
of guy. With Arboriculture Australia out
of the picture, they no longer have a seat
on the Council so we lost Craig. John Gie-
draitis from Texas, another hard working
“get it done” guy has stepped up to the
plate and has jumped right in where Craig
left off. In actual fact, the entire Council
is full of people like this, which makes
it a pleasure to be associated with them.
Speaking of the Portland Conference,
there is still time to register for this great
event. The venue and speaker line up are
excellent and can be viewed online at
isa-arbor.com. The Ontario Chapter will
have a booth there promoting the 2013
Toronto Conference. If you are attending
in Portland, please contact Paul Kobold to
Ahead in this
issue...
just the facts!
Flip to pages 23-25 for an EAB
synopsis: treatment, regulated
areas, key websites, etc.
stand a shift and if that’s not possible, just
drop by and say hello.
In other news, ISA has released a new
course on bark beetles: how to diagnose,
prevent and respond with industry best
practices. It is worth 2 CEUs and is available through the Online Learning Centre
at www.isa-arbor.com.
The pressures of the summer season
call so until the next report, here’s to wishing you a prosperous season. J
7
BITS & Chips. ARBORICULTURE NEWS.
More than a century later, the chestnut returns to New York. Despite fears of budget cuts, both CFIA and
NRCan are operating business as usual. We said good-bye to Erik Jorgensen this spring, one of the first
urban foresters (who would have been happy to read about saving a 100+ year-old pine in Midland).
American Chestnut Returns to The Bronx
In 1904, chestnut blight was discovered at the Bronx Zoo in New York. At that time,
chestnut (Castanea dentate) represented about one quarter of the eastern forest’s hardwood. Four billion trees died. Today, chestnut is an endangered species.
Using a gene extracted from wheat, scientists raised chestnuts that are resistant
to blight. The gene detoxifies the oxalic
acid produced by the pathogen. In most
chestnut, oxalic acid attacks the cambium,
a canker forms, and everything above the
canker dies. In the transgenic trees, the
oxalic acid is detoxified and the tree is
not damaged.
Ten of these designer trees were
planted on April 18 at the New York
Botanical Gardens, just a stones throw
away from the first discovery site of the
disease. The trees are among 470 that
being tested in other sites. — Pat Kerr
More: http://conted.nybg.org:8080/WebModule/jsp/ed2df.jsp?df1=slayout:124HRT400&df7=06x
And: www.sciencedaily.com/releases/2012/04/120412141816.htm
And: http://articles.nydailynews.com/2012-04-20/news/31375903_1_blight-resistent-trees-chestnuttree-american-chestnut-association
And: www.syracuse.com/news/index.ssf/2012/04/esf_professors_send_improved_a.html
8
small photo: american chestnut, karren wcisel, www. treetopics.com
CFIA Invasive Surveys Continue
The Canadian Food Inspection Agency
(CFIA) is planning similar numbers
and patterns of trapping and surveys
for emerald ash borer and Asian long
horned beetle in 2012 as was done in
2011 explained CFIA’s Brian Hamilton.
Last year, 591 traps plus surveys
were completed in Ontario. This year,
525 are scheduled but the agency will
also respond to “call-outs” and expect
this number to increase to last year’s
level or higher.
Since we have no effective trap for
ALHB at this time, ground surveys will
continue on a grid pattern both within
the regulated areas and throughout Ontario and Quebec. The list of cities to be
targeted in 2012 is not finalized but they
plan on 510 sites. If no further finds are
discovered, the Vaughan site could be
declared eradicated next summer.
Hamilton concluded, “No regulated
system is 100%.” However, we are
monitoring at the border and watching
— Pat Kerr
high-risk areas.
NRCan Invasive Species Cuts a Myth
Although there are many rumours circulating to the contrary, Jackie Perras with
Natural Resources Canada said, “Following Budget 2012, Natural Resources Canada (NRCan) has maintained funding for
both staff and research for work on forest
invasive alien species. NRCan continues
to make significant investments in forest
science, in innovation, and in transforming
— Pat Kerr
the forest sector.” Fight to Save a Single Tree Pays Off!
Influential Forester Erik Jorgensen
Passed Away This May
Erik Jorgensen, the first urban forester,
passed away May 25, 2012, in Guelph. He
was born October 28, 1921 in Haderslev,
Denmark. At the invitation of the federal
Department of Agriculture, Erik, his wife
Gitte, and their two daughters, immigrated
to Canada in 1955 where he pursued a
long, passionate and distinguished career
as a forest pathologist. At the University
of Toronto, Shade Tree Research Laboratory, his team discovered the first cure for
Dutch Elm Disease. At the Ottawa Forest
Management Institute, Erik created a
national urban forestry program. At the
University of Guelph, he was director of
the Arboretum.
During his life in Canada, Erik made
many dear friends and inspired numerous
future foresters. He authored over 60 articles and scientific papers on tree diseases
and urban forestry; founded the Ontario
Shade Tree Council, and was a life member of the Ontario Professional Foresters
Association and a fellow of the Canadian
Institute of Forestry. He always advocated
the planting of native species to regenerate
Canada’s natural heritage.
Erik was predeceased in April 2012 by
his loving wife of 66 years, Gitte. He will
be greatly missed and fondly remembered
by his daughters Marianne La Rose and
Birthe Jorgensen, son-in-laws Bob La
Rose and David Baker, grandchildren
Karen Irvine, Jenn Wagar, Zeke and
Stoney Baker, grand-son-in-laws Howie
Irvine and Andrew Wagar, and great grandchildren Mackenzie and Penelope Wagar
and Warner and Jackson Irvine. The family
held a private interment for both parents
in Puslinch. Donations in Erik’s memory
can be made to the Ontario Forestry Association, www.oforest.ca.
In response, Pro Oil Change voluntarily agreed to reroute their driveway and allow
the tree’s root zone to remain undisturbed. When the tree dies of natural causes,
Pro Oil will be allowed to construct their driveway according to the original plan.
Company Changes Development Plans to Save 180 Year-Old Pine
“It’s an elegant compromise,” said councillor Pat File of Midland, Ontario. Pro Oil
Change proposed a new franchise to open at King St. and Colbourne in the small
town located on the shores of Georgian Bay. Slated as part of the development,
a white pine estimated to be 180 years old and growing on town land was to
be removed for a driveway. The town agreed to the proposal, but the community
didn’t, and there was an outpouring of support for the tree.
Travis Allan, President of Pro Oil Change said, “We have made some serious
concessions to our site plan and the configuration of our operations purely for the
benefit of the tree. Our wish is to keep nature where it is and alleviate the concerns
of Midland residents.”
Charles Dyer, landowner and developer said, “We have agreed not to build
the entrance to Colborne Street in order to save the white pine tree. If the town
removes the tree in the future, then we reserve the right to build the entrance. This
is a fairly major concession as it restricts the flow of traffic on a fairly tight site.”
Pat File is delighted with the turn of events. After six years in the community and
many failed attempts advocating for the protection of trees, she feels everyone
wins with this decision. In addition, at Monday’s council meeting, a citizen coincidently presented a paper on trees. After hearing both reports, council voted
unanimously to investigate the potential for a tree protection bylaw and a heritage
tree program. — Pat Kerr
More: www.midlandfreepress.com/ArticleDisplay.aspx?e=3564141
And: www.simcoe.com/news/article/1351939--will-town-go-out-on-a-limb-for-majestic-white-pine
Come across an interesting news item? Email editor Joy Black at [email protected].
Heat Islands Can Benefit Trees
We all know the many ways that cities
make life harder for trees, but Science
Daily reported in April 2012 that the heat
island affect can also benefit trees. One
of the main factors considered was that
the increased city temperatures at night
allowed for an increase of up to eight times
the growth of comparative trees grown in
a rural setting. The trees reviewed were
park, not street trees.
The study, published in Tree Physiology, said, “Overall, our findings indicating
greater seedling growth and establishment
at a critical regeneration phase of forest
development may have important implications for the ecology of urban forests
as well as the predicted growth of the terrestrial biosphere in temperate regions in
response to climate change.” — Pat Kerr
More: www.sciencedaily.com/releases/
2012/04/120424154341.htm
And: http://treephys.oxfordjournals.org/
content/32/4.toc See abstract: Stephanie Y.
Searle et al. Urban environment of New
York City promotes growth in northern
red oak seedlings.
9
negligence claim unfounded in quebec
Supreme Court Ruled Dispute With Insurance Company Instead
Following up on a news item we first published in the March/April issue, the Montreal
Gazette reported this week, “The Supreme Court of Canada has ruled that the City of
Westmount cannot be sued for negligence in the death of a 27-year-old man who was
fatally crushed as he drove his car through the municipality in Summer 2006.”
W
estmount vs. Rossy. In August 2006, a 100-year-old
poplar that afterward was
found to be 90% rotten, fell
on a vehicle during a windstorm, killing the occupant. In the three
weeks following the incident, 13 other
trees were found in the same district that
posed either a small or medium risk. They
were removed. The family of the victim
sued the city for negligence. The case was predicted to have farreaching implications on how the autoinsurance board deals with accidents that
are not really car accidents at all. André
Legrand, Senior Partner with Norton Rose
Canada, council for the City of Westmount
said, “We prefer not to get into this. A
related case is still pending.”
Julius Grey, counsel for the Rossy family, said in a telephone interview from
Montreal, “I still believe the judgment is
incorrect but the Supreme Court is the law
in our land. We need to start a debate about
the purpose of no-fault insurance. We have
two forms of no-fault insurance: worker’s
compensation and auto. These are both important. Certain accidents are seen as a risk
in our society and not tied to moral fault.”
Grey explained that in this case the
court did not hear the description of the
tree and he believes there was moral fault.
An expert was willing to testify the tree
was perilous and it should have been cut
years before. It was an accident waiting to
happen. It could have fallen on a pedestrian
or a cyclist and then the no-fault auto insurance would not have been an issue. “There
is little purpose to putting this accident on
the social scheme.” (But by relegating it to
the social no-fault auto insurance arena, it
did severely limit the amount of the claim.)
The town was not involved. The dispute
was with the insurance company.
Grey would not comment on whether
the city has changed its tree care guidelines
in response to this “incident.” — Pat Kerr
More: www.globalnews.ca/supreme+court
+of+canada+to+rule+on+montreal+fallingtree+fatality/6442666581/story.html
And: www.montrealgazette.com/business/
Westmount+sued+tree+that+struck+killed+court/
6824861/story.html
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10
Official OTCC Show Sponsor
2011 OTCC men’s champ ben sauve
2012 tree climbing championship
See You in the Forest City on September 15!
Springbank Park in London will host the provincial competition that features
the top talent in arboriculture and an amazing arboreal display of strength,
speed and agility. Five different competitive events test the knowledge, skills
and abilities of the men and women brave enough to compete. The top climbers will go on to compete
at the International Tree Climbing Championship in Toronto in 2013. Registration opened July 16.
Spectators, Volunteers & Exhibitors
Spectators are welcome to attend this free
event. A trade show of arborist equipment
will be featured and spectators can try
climbing like an arborist in the “Climb
For All Ages” under the guidance of a
professional arborist. Anyone interested
in lending a hand at the event can contact
Mike Watson at [email protected].
Those interested in exhibiting and/or
sponsoring, contact Mike Raaymaker at
[email protected].
Reserve Your Spot!
Registration opened on July 16 at 7 am.
Reserve your place by faxing the registration form (available at www.isaontario.
com) to the ISAO office at 416-493-4608.
Note that entry is selected on a first-come,
first-serve basis. Twenty-five spaces will
be reserved for men and ten for women.
All 35 spaces were available as of July 16.
Thereafter, if any space becomes available,
it will be filled with competitors who are
on the waiting list on first-come, firstserved basis.
Results from last year’s competition are
also available on the ISAO website under
the “Events – Tree Climbing Championship” link.
Stihl Limited (Canada) Show Sponsor
Stihl Limited has signed on to be the
OTCC Show Sponsor for the next three
years, beginning with this year’s competition in the City of London. On behalf of
the OTCC Committee and ISA Ontario,
Committee Chair Paul Kobold would like
to thank Stihl Limited for this generous
sponsorship commitment.
ITCC UPDATE
Ben Sauve, our 2011 Ontario Men’s
Champion, is not able to attend
this year’s 2012 International Tree
Climbing Competition (ITCC) being
held in August 11-12 at Laurelhurst
Park in Portland, Oregon. As a result, Sean Hoondert, runner-up at the
2011 OTCC event, will represent
the Ontario Chapter. Good luck to
female champ Krista Strating and
Sean Hoondert. We wish them a
safe and rewarding competition.
Members: If you won’t be in Portland to
cheer Ben and Krista on personally, feel free
to send them an email via the ISAO office at
[email protected].
11
What’s Bugging Your Trees?
Jen Llewellyn, OMAFRA
Plant Health in the HEAT: Water Those Trees!
As I write this month’s column, the high forecasted for today is 33o C and the humidex rating is over
42o C. I don’t have air conditioning at home and I am seriously considering sleeping on the floor of
my office tonight. We have had a tremendous amount of heat since very early spring and you have
probably noticed that plant and insect development is 2-3 weeks in advance of normal. On top of
that, there has been a serious lack of rainfall in several key agricultural areas of southern Ontario.
M
any of the southern Ontario
conservation authorities declared a Level I Low Water
Response in their watersheds
back in May (in May!). I’ve
never seen anything like it. Some of these
watersheds are very close to declaring a
Level II. The average precipitation across
the Hamilton Conservation Authority watershed was between 40-60% of normal for
this past spring. So to get on topic, if you
think that poor little tree doesn’t deserve
some irrigation, think again!
Most newly planted trees require irrigation, especially in the first year or two
of planting. They have a very small root
12
system and the water use demands of the
canopy will not be met without a little help
from us. It’s been extremely dry since early
spring, which means that our soils don’t
have the moisture reserves they normally
would coming into the summer season.
When soils are this dry, it takes a long
time to wet them again. Irrigation water
will actually bead off dry soils and mulch.
That’s where a long, slow, deep soak using low volume and low pressure comes
in. This slow delivery of water will be
required for the moisture to actually make
it down into the root zone. This can be
achieved by slowly applying an inch or
so of water to the soil every 7-10 days
during hot, dry conditions. Researchers at
Michigan State University came up with
the following chart:
crown
Spread (M)
water
required (L)
2
75
2.5
115
3
190
3.5
265
5
475
6
750
Many homeowners have automated
irrigation systems installed in an effort to
reduce the stress on their landscape plants.
In most cases, the irrigation systems have
been designed to deliver water efficiently
to the root zone and can be deployed after
sunrise to facilitate leaf drying by midmorning. Any time we spray water on
leaves, those leaves can stay wet for hours
and that period of time is called the “leaf
wetness period.” There are several different kinds of fungi that can infect leaves
after only a 6-8 hour leaf wetness period,
is, the challenge is to educate the client
without insulting them.
Sprinkler-type emitters are still very
popular as they can deliver large amounts
of water over large areas. Unfortunately,
they are not very efficient because a significant percentage of the water droplets
can be lost to wind and evaporation before
they even hit the ground. In some cases,
low volume irrigation (e.g. drip) systems
can be an effective alternative to deliver
water much more efficiently to the root
zone while keeping water off of the leaves.
gardens and lawn looking great. This spring
they planted a B&B Colorado spruce out
front. They said it took about 8 hours with
a pickaxe but they finally dug the hole! I
realized that the tree never actually leafed
out this spring and this week I noticed that
telltale, dull grey hue that spruce get when
they are on their way out of this world. It
was time to tell them – and they weren’t
happy. What happened to the tree? I think
if you’ve been reading my columns all these
years, you should be able to have some
pretty good guesses lined up! J
Anything you can do to design the irrigation system
and the landscape to minimize leaf wetness periods
may result in a much healthier, cleaner looking canopy.
some 8-12 hours. If overhead irrigation is
used in the evening, you can imagine how
easy it would be to create ideal conditions
for disease.
Recently I had an arborist come to me
with disease issues on several different
species of plants on one client’s property.
Now it’s been hot and dry, how is this
possible? As it turned out, they had an
automatic irrigation system and they really liked to use it. When asked how often
they irrigated, the arborist said: “Well they
used to irrigate every day but now they’ve
backed it off to every other day.” I actually hear this lot (and continue to find it
quite surprising considering the amount of
public education on water conservation).
So now that we know what the problem
Anything you can do to design the system
and landscape to minimize leaf wetness
periods may result in a much healthier,
cleaner looking canopy. I have seen this
principle employed very successfully in
nursery production. Several times I have had
growers tell me that their disease issue goes
away after they switch the irrigation cycle to
deploy after sunrise (and completely avoid
irrigation at other times of the day). They
usually have a goofy smile on their face
when they are telling me this because I have
been known to “nag” about leaf wetness.
Each time I pick up my daughter from
her after-school babysitter’s house, I usually stop and have a look around at their
gardens. This family has a beautiful home
and they put a real effort into keeping the
Columnist Jen Llewellyn
Ontario Ministry of Agriculture &
Food & Rural Affairs (OMAFRA)
Nursery Crops Specialist
P: 519-824-4120 ext. 52671
F: 519-767-0755
E: [email protected]
W: www.ontario.ca/crops
Nursery & Landscape Report
Your weekly resource for IPM in the
landscape. Available online, by
phone (1-888-290-4441) and by
podcast. Visit www.ontario.ca/crops or
http://apps.omafra.gov.on.ca/scripts/english/
crops/agriphone/index.asp.
We are not unique, but We are good.
We are convenient. We try hard. but most importantly,
your lease will suit your requirements (not ours).
We lease new and used equipment, chipper
and bucket trucks, any make/model of truck
or equipment used by arboriculture and
landscape industry professionals.
Call Laura Catalano at 1-888-634-9559
(throughout Ontario) or 905-634-9559
Email: [email protected]
Over 25 years in the leasing business.
13
in the field with matt logan
Education is The Key For Preventing & Treating MSDs
As summer and the busy season is upon us, I will discuss issues and injuries that can arise from
the constant stress and strain of working in the arboriculture industry as well as some proactive
ways to reduce and alleviate these issues. Although it isn’t uncommon for climbers and arborists
to have their fair share of bumps and bruises, there is now an upsurge in awareness regarding
injuries and conditions that can compound and build over time. The blanket term for these injuries
is work-related musculoskeletal disorders or MSDs.
T
he following explanation of MSDs
and their causes comes from www.
corergonomicsolutions.com, a certified
ergonomic assessment specialist
company created and owned by Ed
Carpenter, the inventor of Buckingham’s
Ergovation saddle. Ed graciously let me
use his website and knowledge when crafting this article.
14
MSDs are disorders that occur from
repetitive micro trauma or injury to the
soft tissues in the body such as ligaments, tendons, nerves, joints, cartilage
or discs in the spine. MSDs generally
occur from repetitive movements associated with work tasks; therefore they are
also called repetitive stress disorders or
cumulative trauma disorders. Examples
of MSDs are carpal tunnel syndrome,
epicondylitis, shoulder impingement,
rotator cuff syndromes, sciatica, sprains/
strains and herniated discs in the spine.
MSDs can be caused by a number of
factors, including: repetitive movement,
forceful exertions, awkward posture, contact stresses and vibrations and extreme
temperature.
When looking at the causal agents for
these disorders, it is easy to see why climbers can experience one or more MSDs
throughout their career. However Ryan
Freeburn, a registered physiotherapist
at FreeFlo physiotherapy in Lakefield,
Ontario, explains that the issue of MSDs
are no more prevalent in our industry than
others. Freeburn explains, “Anyone doing
a job that includes repetitive motion is at
risk. This can include someone working
on a keyboard behind a desk as well as a
climber pulling him or herself up a tree.
The key is how we deal with these issues.”
Freeburn puts it simply. In order to
eliminate or reduce the effects of MSDs
you must:
Prevent. As the saying goes, an ounce of
prevention is better than a pound of cure.
Freeburn explains that simple changes in
your daily routine can make a huge difference in the long term. “Proper posture is a
good start. Try to stand and sit properly and
not slouch. Be aware of your posture and
try to keep your back straight and aligned.”
Slouching can be compounded by another issue common to climbers – muscle
imbalance. This occurs by over-exerting
one group of muscles and not having the
opposing muscles as strong or toned. This
can create tightness, inflammation and
pinched nerves. This is one issue Freeburn
has been treating me for – my pectorals
are constantly tight and in turn pull my
shoulders forward pinching the nerves in
my arms. By stretching and strengthening
my back, the muscle imbalance will neutralize. Another tip: make sure to stretch
before, during and after physical activity.
Recognize Warning Signs. Listen to your
body. If you are experiencing sharp pains,
soreness, loss of strength or circulation,
consider stopping what you’re doing or at
minimum, modifying your technique to
decrease strain. When you feel tightness
and discomfort, stretch, stay hydrated and
when at all possible, rest.
Rest. Speaking of which, bodies need
to rest to heal. As a business owner and
production climber, I know all too well
that there is no rest till winter but this
type of stubbornness and short sightedness can compromise your long and short
term health as well as your safety and
production.
Treatment. There are many avenues of
treatment depending on your particular
MSD. It’s important to remember that
there are no quick fixes – treatment is a
process requiring time and dedication.
Adjacent Top. Ryan Freeburn of FreeFlo
Physiotherapy applies ultra sound treatment
to my elbow. Adjacent Bottom. Arm braces
like the black one showing here can alleviate strain and discomfort while you are
working. This Page: Freeburn demonstrates
effective stretching for your lower arm.
From my own experience, it is all too
easy to think you’re fixed and quit receiving treatment only to have the same issue
return down the road.
“Education is key; you need to know what
is happening to your body to understand
why certain treatments and exercises are
prescribed,” adds Freeburn.
15
These Treatments Can Include:
Deep Friction Massage Therapy. This is
a high-pressure massage aimed at increasing blood flow to damaged areas as well
as aligning damaged tissues for proper
healing.
Ultrasound. Sound wave energy is focused on damaged areas to enhance cellular activity and accelerate healing.
IFC. Small electric pulses create muscle
spasms surrounding the damaged area.
This is used to block pain as it distracts
the nerves surrounding the damaged area.
Arm Brace (tennis elbow brace). Although not an actual treatment, the arm
brace works to temporarily reduce strain
on the tendon attaching the muscle in your
forearm to your elbow. Freeburn explains
how it works: “Imagine an elastic band
placed around a nail hammered to a piece
of wood. The nail is your tendon and the
elastic your muscle. When you stretch the
elastic, there is equal tension throughout
the band and therefore the nail. Now, if you
were to put your finger down with pressure
on the elastic against the wood and then
pull, there would be reduced strain on the
nail. That’s what the arm band does; it puts
pressure on the muscle to relieve pressure
on the tendon.” Freeburn continues, “It is
important to remember that the brace just
helps to unload the stress on the damaged
area and in turn, allows the body to repair
itself. In essence, it is allowing your body
to rest the damaged area.
A very good friend used to remind me:
This job is a physical one, use your body
but don’t abuse it, there is life beyond
work.” In my youth, I was foolish enough
not to heed that advice and am now, like
many in our industry, having to deal with
the results. On the bright side, Freeburn
sheds some light, “Most of these issues
are temporary and they are reversible. If
people use preventative measures, recognize the warning signs, rest when needed,
and receive and dedicate themselves to
treatment, it is possible to prevent and
reduce workplace MSDs.”
Have a safe, productive and healthy
summer season. J
About the Author
Matt Logan is owner/operator of
Logan Tree Experts based in the Peterborough/Kawartha area. He is an
ISA Certified Arborist/Tree Worker
ON931-AT as well as a Certified Tree
Risk Assessor CTRA721 and trainer for
ArborCanada.
Next Issue...
AD/copy deadline
september 10
The Ontario Arborist is the leading
tree care publication in the province. Contact Joy Black at 519-3716818, [email protected] for
details on advertising opportunities.
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16
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Celebrating Over 60 Years!
bare root transplanting
Project Case Study. Article by Jon Arnold.
New projects don’t often arise in arboriculture; techniques change,
but the end results remain the same. In 2011, Shady Lane Expert Tree
Care had the opportunity to do something new – bare root transplant
large trees at Nathan Phillips Square in Toronto. The scope of the
project was complicated. Here were our tasks: 1) relocate 15 trees
(bare root) from within the park setting to a temporary hoarding zone
before any negative impact was incurred via construction; 2) hold
these trees in a pea gravel medium for 18 months using water and
compost tea to keep them healthy; and 3) replant the trees using silva
cells to maximize the newly developed root size. Editor’s Note: Jon
first presented this project at our February Conference in Kingston.
Step 1: Accessing & Protecting the Roots
The first step in the process was to remove
the sod over the existing drip zone so that
we could save the root mass. Next, we
used an air knife to create a perimeter 1
foot deep and 6–8 inches wide (see above
photo). This allowed us to ensure that no
major roots were lost in the transplanting
and to make a clean cut on larger roots to
help prevent further desiccation.
17
18
for the winter to avoid frost damage. We
removed the mulch at the beginning of the
spring to avoid cooking the roots.
Originally, landscape fabric was applied
to bottom of the pea gravel planting bed to
stop the roots from travelling into the soil
below. This proved to be inadequate so a
much thicker material should be used in
the future. Be sure to use a porous material that allows water to filter through so
that you don’t create a drainage issue. The
trees were in the pea gravel for 18 months,
which was more than enough time to create good root growth (though the optimum
length would be one full growing season).
Step 2: Moving the Trees to Their
New, Temporary Environment
We used a skid steer to move the trees
to the temporary hoarding zone. Before
placing the trees in the pea gravel, we used
our compost tea truck to add a rooting gel
to the entire root system. This helped the
roots to stay moist and added mycorrhiza.
We quickly learned that the pea gravel held
more water than originally thought, so we
reduced the watering schedule to one hour
per week. We also added 1 foot of mulch
Step 3: Returning Them Home
When we were ready to replant the trees,
we used a larger air knife with a larger
compressor to move the pea gravel to allow us to lift the trees. We used our 100 ft,
30-ton crane to move the trees to their new
planting sites with ease (see main photo on
page 17). All trees went into new soil with
Adjacent Page. Note the abundance of new
root growth following a winter spent in the
temporary hoarding zone. This Page Top.
Tree being removed from its original site
following root pig-tailing (shown in smaller
pic below). This Page Below: Temporary
hoarding zone covered with pea gravel.
Once we established the root zone for
moving the tree, we dug a larger trench
around the perimeter. This allowed us to
blow down and in to the trench to continuously move soil out the trench with
the skid steer. We uncovered all the roots
and pig-tailed or braided them to help
minimize damage during transportation
and retain moisture. As the roots were braided and tied to
the trunk, we were able to move the trench
toward the apex of the tree allowing us to
continue to blow air down into a newly
cleared trench. Keeping the roots moist
throughout the process was a constant
battle; we misted the roots every 20 minutes. Once the soil was removed from the
majority of the root plate, we used a crane
or large skid steer to break the taproot.
Then we wrapped the attachment points
in burlap and foam to avoid damage to the
bark and/or cambium.
19
Advertising Kit
magazine, web, etc.
Available as a download at www.
isaontario.com or by contacting Joy
Black, [email protected]
The award-winning Ontario Arborist is the leading tree care publication in the province and thus
one of the best places to advertise
your products, services and job/
equipment listings. Our website
is a key member resource and
was completely overhauled in Fall
2011. The job bank and classifieds
sections are two of the most popular areas on the site. Other annual
sponsor/exhibitor opportunities
are available at the Chapter’s two
main events, the conference and
the tree climbing championship.
Give us a call!
Yes, We’re Moving
mid-july 2012
As of mid-July, ISAO headquarters
will be moving from downtown
Toronto to 7856 Fifth Line South in
Milton. In the interim, the best way
to contact ISAO may be via email.
Letters to Editor
we like feedback
Do you have an opinion on any
of the content published in the
Ontario Arborist? Please drop us
a quick line. It’s your magazine!
We value your feedback, positive
or negative, and you can remain
anonymous if desired. Please feel
free to submit content/article ideas
as well! Contact Joy Black at 519371-6818, [email protected].
20
higher organic matter with better nutrient
cycling and water holding capacity. We
planted the trees proud to allow for settling of the bare root system. Also, a heavy
watering was applied to allow soil settle
around the lower root system.
Parting Comments & Lessons Learned
This was a very innovative project with
the potential to improve tree defects underground, soil and growing conditions,
and move trees out of urban construction
sites to be replanted after construction is
complete. Although we didn’t plant these
trees within silva cells due to budgetary
restraints, the relocated trees were planted
throughout Nathan Phillips Square in
raised planters or in existing green space.
Due to the improved size of the root
systems, I believe that all trees replanted
will be successful for years to come. Our
overall success rate was 79% and we
learned a lot about holding trees in pea
gravel and the specific site requirements
for success. Three oak trees did not survive the overwintering time in pea gravel.
Possible reasons include overwatering,
the fact that they were in full leaf when
they were moved due to the early spring,
and they were placed in full shade in the
temporary hoarding zone.
There are pros and cons to the method
we employed here versus conventional tree
spading. Bare root transplanting requires
four to five people on site, several pieces
of equipment, and long days. The pros are
Top. Author Jon Arnold on site, Nathan Phillips Square, Toronto. Small Photo. Happy
trees in their new setting.
that you can retrieve about 90% of the root
mass, repair structural flaws within the root
system such as girdled roots, and improve
compacted or nutrient deficient soils. Another positive of this project in particular
was the increased root size due to holding
the trees in pea gravel. This is not possible
with conventional tree spades. However,
tree spades are quicker, less expensive, and
have a smaller carbon footprint.
This project was a great learning experience for Shady Lane Expert Tree Care and
we are very pleased with the outcome. As
arborists, we are often hired to remove
healthy trees from construction sites in
urban areas. For large-scale projects, this
technique offers a viable alternative to tree
removal, creating the potential for growth
within our industry. J
— Jonathan Arnold, ISA ON1091
Co-owner, Shady Lane Expert Tree Care
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we need photos!
Based in Toronto and serving the GTA, we are seeking arborists for full time employment.
Each employee at Cohen & Master represents an important part of our operation. We are
looking for the right people to join our team. Our commitment to you includes respect for
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work environment, training opportunities and a true career in arboriculture.
Join an enthusiastic team of professional arborists who are highly
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We’re working hard to expand our
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print and electronic publications.
We’re interested in any aspect
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Qualifications & experience
Minimum 1 year work experience in arboriculture and/or training in an
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A valid G driver’s license (DZ an asset). First Aid/CPR an asset.
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22
submitted by
professional Tree services
Your Opinion?
Do you have an opinion on this
or any other content featured in
the Ontario Arborist? This is your
publication and we’d like to start
a “Letters to the Editor” section
in which we have a constant
dialogue among members. Please
email your thoughts to editor Joy
Black at [email protected].
Deadline for the next issue is September 10th. Drop us a line!
straight facts & tips on EAB
Pat Kerr Provides a “Cheat Sheet” For the Upcoming Flight Season
There are forests of information now available on the so-called elusive emerald ash borer. And every hamlet, town and city in Ontario
is eventually going to have to deal with the invasive. So here’s a
cheat sheet to help you do your job better. If we’ve forgotten any
key elements (or combat strategies), please let us know.
L
et’s continue on a more positive
note. There are treatments for
EAB that work. The Coalition for
Urban Ash Tree Conservation EAB
Management Statement begins,
“We the undersigned strongly endorse
ash tree conservation as a fundamental
component of integrated programs to
manage emerald ash borer (EAB) in residential and municipal landscapes. Costeffective, environmentally-sound EAB
treatment protocols are now available that
can preserve ash trees through peak EAB
outbreaks with healthy canopy intact.” See
www.emeraldashborer.info.
Who’s in Charge?
The Canadian Food Inspection Agency
(CFIA) is the regulatory body managing
invasives in Canada. The following link
will lead you to the current regulated
areas and provide you with the Canadian
legislation. Don’t be confused. This is
not an outline of where EAB is feeding;
it is simply a list of the “regulated areas.”
Mapping of EAB locations is not available
at this time in Ontario.
Regulated Areas
Areas currently regulated for EAB include
Essex in the most southerly tip of Ontario
Top. Emerald ash borer (EAB) trails. Edward
Czerwinski, Ontario Ministry of Natural Resources, Bugwood.org. Above. EAB. Debbie
Miller, USDA Forest Service, Bugwood.org.
north to Huron, east to Durham (including
all of Toronto), also Manitoulin Island
and Sault Ste. Marie. The eastern region
includes Leads, covering Ottawa, northeast
to Prescott and Russell. There are also two
points in Quebec including Montreal.
23
on firewood making our parks and campgrounds high-risk sites. Since people
often can’t identify ash wood, emphasize
the importance of never move firewood
of any type.
debbie miller, usda forest service, bugwood.org
Timing
This year we saw record numbers of small
orange butterflies called the red admiral
and painted lady due to the unseasonable
warm weather experienced across North
America. The emerald ash borer also responded to the warmth. Timing for administration of treatments could be three weeks
early this year. Check your local conditions
to make sure your timing is right.
Alternative Species
CFIA recommend the following alternatives
to ash: maples (silver, sugar, red), hackberry,
honey locust, black walnut, eastern red cedar, tulip tree, oaks (swamp, white, burr, pin,
red) and basswood. Don’t feel limited by
this list. There are lots of species to choose
from. Note that regular Ontario Arborist
columnist Jen Llewellyn covered this in Ash
Drought
This year’s early drought was also a bonus
to EAB. Stress tree watering to keep ash
as healthy as possible. Ensure all injection systems are installed when the soil is
damp, not soaked and not dry.
Locating EAB
Here are the Canadian Forest Service
(CFS) recommendations on branch sam-
Quick Fact: Staggering Financial Costs
The Emerald Ash Borer has killed over one million trees to date in southwestern
Ontario. The City of Toronto estimates it will cost $37 million over five years
to cut and replace the city-owned trees that are killed by EAB (City of Toronto
unpublished data). The Canadian Food Inspection Agency (CFIA) has spent over
$30 million and cut over 130,000 trees to slow the spread of the beetle (CFIA
unpublished data). Source: Ontario Invasive Species Strategic Plan July, 2012.
Read the whole report: http://www.mnr.gov.on.ca/stdprodconsume/groups/lr/@mnr/@biodiversity/
documents/document/stdprod_097634.pdf
Alternatives in our January/February 2012
issue. You can find her article online in our
archives; just do a search.
More: www.inspection.gc.ca/plants/plantprotection/insects/emerald-ash-borer/eng/
1337273882117/1337273975030
Priorities
Just about every expert stresses the importance of not moving firewood. Although
this pest does fly, its dispersal is often
24
pling for EAB. Most other techniques
for locating EAB only discover late or
advanced finds ( http://publications.gc.ca/
collections/collection_2011/rncan-nrcan/Fo123-1111-eng.pdf).
Reporting EAB
Report all EAB finds outside the regulated
areas to 1-800-442-2342 (toll free) or
online at www.inspection.gc.ca. Remember:
arborists and the public made most EAB
finds.
General Public Information
Although just about every city infested
with EAB has pertinent links on their
own sites, there are a couple of general
sites with overall information. Visit www.
emeraldashborer.info and http://cfs.nrcan.gc.ca/
pubwarehouse/pdfs/31501.pdf.
Tree Value Calculator
When your customer wants to know (impartially) what their ash is worth: http://
gmaps.nrcan.gc.ca/apm/index.php?lang=e&m=e.
Note we ran an article on this in the March/
April issue.
Treatment Options
It is now an established fact: Urban ash in
regulated areas will die if not treated. The
only possible exception is blue ash. Blue
ash are hanging on longer but there is no
proof they are resistant to EAB. There are
some surviving ash trees in rural areas of
the US but these are rare. In urban areas,
if you want an ash to survive, it must be
treated.
Canada has three injection treatment options available. Their success rates and
prices vary. Read the labels carefully.
These products do not have equivalent
tree survival ratings. More data is expected
in the fall of 2012 on survival rates but
remember, no treatment is not an option;
you will lose canopy trees.
The options available currently are:
TreeAzin: www.bioforest.ca/index.cfm?fuseactio
n=content&menuid=18&pageid=1026
Confidor: www.bayeres.ca/GH_Confidor
ACECAPS: http://treecareproducts.com
Watch for Arborjet’s IMA-jet coming
possibly as early as 2013 (http://arborjet.
com). Sorry the company is not trying, at
this point, to bring TREE-age into Canada.
Creative Funding for Treatment
While not actively funding treatment for
private ash trees, the Town of Oakville is
helping homeowners get the best bang for
their buck. They have a Facebook page to
help tree owners join together to get group
discounts. (Imagine the savings if 3 or
10 homeowners within a block would all
agree to have their trees treated the same
Just discovered!
EAB on the BRUCE
CFIA media release circulated
while we were producing this
issue of the Arborist...
braconid wasp (eab parasitoid), David Cappaert
Michigan State University, Bugwood.org
day.) The town further reached out to
Oakville’s business improvement group to
find funding for treating healthy city trees
under 20 cm. Once they reach 20 cm in
diameter, the town will pay for treatment.
The Town of Oakville also contacted the
Chamber of Commerce and received their
member support for treatment of businessowned trees.
Creative Options for Homeowners or
Municipalities
Pre-invasion.
Underplant with a “safe” species and
prune healthy ash street trees to avoid
the bare look that is coming if treatment
is not done.
Post-invasion.
1) Use rural forestry techniques to control
costs while clearing ash dominated areas.
2) Use the ash wood. Consider garden
accent pieces or art. The following is an
advertising pamphlet for 55 woodcarvings displayed in Orangeville. It includes
a listing of the artist’s names: http://oran-
gevilletourism.ca/files/2012/01/Tree_Map_Web.
pdf. Another list of carvers is at http://
muskokacarvingevent.com/category/carvingevent-carvers. More information on carvers
is expected to be available in this summer
at www.backyardstuff.net/aspx/m/846713.
3) Another option is to have the wood
dried and milled for any use. Check your
local paper, or www.ont-woodlot-assoc.org/
woodlot.html, for listings of portable or other
sawmills (and see Dave Boyt’s article in
the last issue).
Moving Forward
Stay positive. The following sites are
American in origin, but this does not imply
that Canadian scientists are not actively
involved in the treatment for EAB. We just
lack really good, up-to-date websites. In
the ten years since the discovery of EAB,
extensive gains have been made. Traps
and a pheromone lure are improving. The
bio-control option in the US is ongoing
– the rearing facility started operating in
2009 and it is pumping out wasps hungry
to consume EAB.
More: www.aphis.usda.gov/plant_health/
plant_pest_info/emerald_ash_b/downloads/EABFieldRelease-Guidelines.pdf
And: www.ars.usda.gov/Main/docs.htm?
docid=11146
Resistant ash exist in a US laboratory.
In time, they will be available for sale:
http://nrs.fs.fed.us/disturbance/invasive_species/
eab/control_management/lingering_ash
And: http://nrs.fs.fed.us/disturbance/
invasive_species/eab/control_management/
eab_resistent_ash
Current treatment options for high value ash
are making advancements and more are in
development. EAB and ash trees can coexist. Don’t give up on healthy canopy trees. J
Editor’s Note. Pat Kerr wrote a 3-part series
on EAB in our July/August, Sept/Oct and
Nov/Dec 2010 issues. Do a search for
author Pat Kerr in our online article bank.
This is a link-intensive article. Make your life easier. Go online to our Article Bank (under
“Education & Resources”) and then simply click on the links versus typing them in yourself.
25
C a n a d i a n
October 2 - 4, 2012
U r b a n
Fo r e s t
‘The Forest City’
C o n f e r e n c e
London, Ontario Canada
Tree Canada and the City of London in partnership with the
Ontario Urban Forest Council and the Society of Municipal Arborists,
invite you to the 10th Canadian Urban Forest Conference (CUFC10).
The bilingual conference will include:
A banquet and gala event marking
Tree Canada’s 20th anniversary
A strategic urban forest workshop and quality
local, national and international presenters
Networking and dialoguing opportunities
Field tours of London’s urban forest and
with Canadian and American urban
Canada’s unique Carolinian forest
forest leaders
Visit the bilingual conference website for registration and information:
www.cufc10.ca www.ccfu10.ca
26
tree of heaven, karren wcisel
www.treetopics.com
heavenly trees in an imperfect world
Urban Forests Are Not Islands & Species Selection is Critical
Article by Pat Kerr. This spring, one of the discussion topics on the Canadian Urban Forest Network’s
electronic discussion forum (CANUFNET) was titled simply: “The Tree of Heaven.” This title gave no
hint of the diversity, or breadth, of the discussion. The two main issues that surfaced were planting
with environmental consequences and planting for medical reasons. Other threads also popped up
including arborists are “lazy” when they recommend non-native species. For those of you who missed
it (or those who would appreciate a summary), here is an outline of what transpired online and some
expert opinions shared by those who are not always planting in paradise!
The Sneeze Fest
It was suggested that the Tree of Heaven
could be used for those who suffer from
seasonal allergies. More correctly termed
“allergic rhinitis,” the University of Maryland defines this as “an allergic reaction
that happens when your immune system
overreacts to substances that you have inhaled, such as pollen.” Tree and hay fever
allergies are classified as seasonal. Perennial allergies are associated with dust, pets
or other allergens that don’t disappear with
the weather.
Dr. Howard Langer, President of the
Allergy, Asthma and Immunology Society of Ontario (visit http://allergyasthma.
on.ca/allergy-websites, said in a telephone
interview that changing a front lawn tree
will not significantly decrease an allergy
sufferer’s experience. “Being close to a
tree makes little difference. With many
thousands of trees in a forest, or multiple
trees in a neighbourhood, one tree doesn’t
change pollen levels. When walking under
a tree, you don’t specifically suffer. Pollen
is airborne and travels with the wind. It
travels up to one and a half miles up in
the air and even a few miles out into the
ocean.”
“It would be great if we could have
less pollen in the air,” continued Langer,
but there are other things allergy sufferers should consider. “People should wear
long sleeves and gloves when pruning or
contacting sap. If you are sweeping, you
can be inhaling pollen directly.”
What’s CANUFNET?
The Canadian Urban Forest Network’s
electronic discussion forum (CANUFNET) was initiated to “facilitate the
exchange of ideas, opinions and
concerns.” Andy Kenney, Faculty of
Forestry at the University of Toronto,
says on the website, “Please feel free
to use this list in any way that you feel
will contribute to advancing the cause
of urban forestry in your jurisdiction or
across the country.” However, please
note that it is not for advertising. To
connect with the CANUFNET-request
mailing list, complete the form at the
following internet link: http://list.web.ca/
lists/listinfo/canufnet.
27
Langer also said it is an interesting
discussion to consider if whole city blocks
were changed to low allergen trees. “This
year, spring came three to four weeks
early. People driving back from Florida
in February suffered the entire trip as the
trees bloomed in succession northward.
When they reached Canada, they had about
a week’s respite and then their allergies
returned as pollination started north of
the border.”
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28
Blame the Girls (and Tree Breeders)!
The National Post ran an article this
spring on tree breeding and allergies. They
suggested the allergy problem currently
experienced in urban areas is due to tree
breeding or because we stopped planting
“messy” female trees. The story got a lot
of press with cutie headlines like “Female
trees: You can’t live with them. You can’t
live without them” or “Botanical Sexism.”
Their point was clear: we can blame our
spring allergies on those damn tree breeders (who in turn will blame market conditions and customer preferences) or we can
contribute to the discussion in an educated
manner with the facts.
More: http://news.nationalpost.com/
2012/05/07/botanical-sexism-blamed-formaking-life-miserable-for-allergy-sufferers
And: www.leaderpost.com/health/Tree+expert
+says+both+sexes+need+prevent+allergies/
6421797/story.html
Environmental Consequences
To live in an environment with no airborne
allergens is the fantasy of every allergy
sufferer and the parent of every allergysuffering child. An artificial community
where no maple, elm, alder or birch, the
high allergy trees, are allowed to survive
leads to the next issue: what are the consequences of a sterile society? We have
the technology. We can plant all female
trees or trees like pine that only produce
heavy pollen. Here’s a summary of Barb
Boysen’s response. She’s Coordinator of
the Forest Gene Conservation Association:
“The urban forest is not an island. It
has great potential to contribute to natural
gene flow, natural migration pathways and
climate change effects.” The urban forest
is becoming “a barrier to that gene flow,
and with the sprawl effect this is increasing. Invasive or maladapted genes can
pollute/dilute the native communities and
gene pools. This is a huge issue and getting
larger in southern Ontario.”
Boysen continues, “I seriously appreciate the need for green and its benefits in
the many totally artificial sites, but I hope
we can do a lot better. The message we
carry to clients, politicians and the public
about what is at stake is a priority. If our
profession doesn’t make the arguments,
how can we expect them to appreciate
it? Are we too pressured to just deliver
anything green?”
Stephen Smith, Urban Forest Associates
Inc., contributed, “Actually non-natives
often don’t do well either. They just tolerate the crappy conditions we put some of
them in. If we do a decent job of preparing
the site and caring for them during the establishment period, then both non-natives
and natives do much better. I don’t even
mind a few invasives like black locust
and Siberian elm on some hostile sites.
But the Tree of Heaven seeds too much.”
Smith added in a telephone interview, “A
lot of trees don’t do well in urban sites
and it isn’t the fault of the tree. Norway
maples sometimes fail to thrive and they
are invasive.”
Jennifer Koskinen of Stantec Consulting said, “Cities like Kitchener are currently developing new design guidelines that
include better development requirements
for street trees so that they can survive
because they simply have not been in the
past. I like the idea of the developments
catering to trees instead of trees catering
to developments.” David Schmitt, City of
Kitchener and past ISAO President, said
his guidelines are a work in progress and
will be accessible later this summer.
The Last Word
Boysen argued: “We’re back to the original
question and how to answer it. What stock
to put where? It’s a matter of context – the
unique complexity of local areas must be
considered. Where one species is a big
problem for some, it can be a solution for
others.”
“I’m asking about a checklist approach
that may help all of us better address the
Quick Facts: What Exactly is a “Tree of Heaven”?
According to Wikipedia, Ailanthus altissima, commonly known as tree of heaven,
ailanthus, or in Standard Chinese as chouchun (“malodorous tree”), is a deciduous
tree in the Simaroubaceae family. It is native to both northeast and central China
and Taiwan. Unlike other members of the genus Ailanthus, it is found in temperate
climates rather than the tropics. The tree grows rapidly and is capable of reaching
heights of 15 metres (49 ft) in 25 years. However, the species is also short lived
and rarely lives more than 50 years.
In China, the tree of heaven has a long and rich history. It was mentioned in the
oldest extant Chinese dictionary and listed in countless Chinese medical texts
for its purported ability to cure ailments ranging from mental illness to baldness.
The roots, leaves and bark are still used today in traditional Chinese medicine,
primarily as an astringent. The tree has been grown extensively both in China and
abroad as a host plant for the ailanthus silkmoth, a moth involved in silk production. Ailanthus has become a part of western culture as well, with the tree serving
as the central metaphor and subject matter of the best-selling American novel A
Tree Grows in Brooklyn by Betty Smith.
The tree was first brought from China to Europe in the 1740s and to the United
States in 1784. It was one of the first trees brought west during a time when chinoiserie was dominating European arts, and was initially hailed as a beautiful garden
specimen. However, enthusiasm soon waned after gardeners became familiar with
its suckering habits and its foul smelling odour. Despite this, it was used extensively
as a street tree during much of the 19th century. Outside of Europe and the United
States, the plant has been spread to many other areas beyond its native range. In
a number of these, it has become an invasive species due to its ability to quickly
colonise disturbed areas and suppress competition with allelopathic chemicals. It
is considered a noxious weed in Australia, the United States, New Zealand and
several countries in southern and eastern Europe. The tree also resprouts vigorously when cut, making its eradication difficult and time consuming. In many urban
areas, it has acquired the derisive nicknames of “ghetto palm” and “stink tree.”
Interesting article: www.thestar.com/news/article/836481--the-heavenly-tree-with-a-seedy-side
complexity of our own context. Not addressing or understanding that complexity
is a historical problem.”
“Many species were introduced here
due to availability from the more mature
and larger European and American markets. They were grown strategically for
a particular market, but then they were
marketed well beyond that market area.”
“I’ve seen a lot of change in the last
20 years. Climate change awareness is
actually growing and more people are interested in asking the question Will it grow
well here? And most importantly, What
exactly is it and where did it come from
in the first place?” These are questions
we should have been asking all along.” J
Editor’s Note: If you need advice on a
particular subject, or are wondering how
other professionals across the country have
dealt with an issue, post it on CANUFNET.
You never know what type, and how many,
responses you will receive. It’s like chatting at a coffee break at a conference, or
listening to a great panel discussion, but
all from the comfort of your office!
29
YOUR EDUCATION, continued from sidebar...
What area of arboriculture interests you the most?
It’s difficult to pinpoint one specific area.
Forestry and tree conservation are both
very rewarding for me. I’m also interested
in invasive species removals, deadwood,
cabling/bracing, and general care for
woodlot trees. A property lucky enough to
have heritage trees is fantastic. I feel we
owe it to these trees to keep them around
for future generations.
As for tree sciences, it’s amazing how trees
continually self engineer their physical
matter in order to continue living. Finally,
I like tree pathology because you have to
look at so many factors, even the client, to
see what “really happened” to the tree’s
environment in the past. I find it very rewarding when you can clearly tell a client
what is wrong with their tree and how we
can help it. Educating anyone who does
not know about their tree and how to take
care of it is always satisfying.
Do you feel your college experience has provided you
with the necessary skills to operate your own tree
care business? From a practical or technical
skill set – yes. But, if I compare my past
careers and education in hotel management, corporate banking or real estate sales
to Humber’s arboriculture program, it did
not have any small business integration. I
do however give Humber instructors credit
for finding opportunities to provide a “real
world” take on... >> continued top of next page
The BasicS
Hometown: Richmond Hill, Ontario
College: Humber
Graduation Date: Spring 2010
Hobbies/Interests: Sailing, fishing,
automobiles
YOUR EDUCATION
What is the single most important thing you
have learned thus far? Arboriculture
evolves continually. From climbing
to tree science and safety, if you do
not embrace change and recognize
how it affects numerous aspects of
tree care, it can negatively affect the
tree, client satisfaction, your reputation and in the worst-case scenario,
your life.
>> continued top of page
30
from the ground up!
A Recent Student’s Perspective on the Arboriculture Industry
Introducing Chris Timperon
This column explores views of the tree care industry from those on the
brink of their career, or those who have decided to return to school later
in life. If you would like to be featured, download the questions online
(www.isaontario.com, ‘About Us’ link, ‘Students’) and contact editor Joy
Black. It’s great exposure and gets your opinions heard!
what we were learning and how it could be
applied in a business sense to a potential
company in arboriculture.
How do you think the arboriculture course can
be improved? I think it would be an asset
for Humber to provide a small business
course. Many people in this industry
want to be their own boss. It would be a
real challenge to form a company right
out of school without some business acumen. A small business intro within the
arboriculture program would provide a
basic foundation for entrepreneurs to get
them thinking about daily operations,
accounting, business plans, sales, hiring,
interpersonal skills, etc.
ism and cannibalization planet-wide on
products that are forest dependent. The
closing scenes could have some simple
facts on how ignorance in caring for our
own backyard tree could affect the tree,
and in the end, all of us globally.
Why is tree care important? It is important to
mediate human interference in a tree’s
natural life cycle. We bring city development, pollution, monocultures, introduction of foreign pests, etc. into the fray and
there’s no going back. We have continually
affected the natural environment and now
must protect and care for trees so they can
help keep the rest of us breathing fresh air
in a stable climate.
YOUR PHILOSOPHY
YOUR FUTURE
Why did you decide to become an arborist and/or was
there a particular moment that cemented your decision? It took years for me to really see what
What would be your ideal job in the arboriculture industry? I am active in many areas of tree care
I was capable of doing naturally and enjoy
at the same time. I eventually connected
the dots over some critical years of my life
and finally realized what made me happy.
I was sitting in Madison Square Park in
downtown Manhattan when it finally hit
me. If your work makes you happy, then
your success will follow naturally.
Do you have a mentor, or who has been your greatest
source of inspiration? Personally, my greatest
source of inspiration has always been my
parents. They have taught me how to really
live one’s life and be happy, take chances
and stay on course throughout any obstacle
or criticism. Professionally, there are several industry people who make me strive
to increase my knowledge in arboriculture
and share it with others: Ian Bruce, Wayne
Wakal, Mark Cooke and Matt Robertson.
How would you explain an arborist’s role in combating climate change to a Grade 5 classroom? I was
asked to speak to a kindergarten class last
fall and was surprised how much they
already knew. Perhaps by Grade 5 we
could use a Michael Moore approach to
drive home what they already understand.
I would love to show a short dramatic
video illustratinging how trees contribute
to climates, different ecosystems, habitats, etc. Then I would contrast it with the
never-ending destruction from consumer-
from climbing, plant health care, quoting
and marketing. I enjoy physical tree care
very much and meeting with people to
show them how we can help them and
their trees. I think it will take time for me
to see where to go from here so I am very
open-minded.
What are the employment attributes you value the
most? Location (urban vs. rural), pay, responsibility,
benefits, flex time, etc. A positive work-life
balance is a huge plus if you are with a
tree care company that supports that value.
Everyone has a life outside of work and
requires certain needs such as a steady
income, good benefits and a salary to
support where they are living. The city
can be great, but it’s also expensive. I look
forward to a more rural setting as I get
older – and one with lots of trees! With
my current role, I have good flexibility and
the culture at Bruce Tree encourages me to
work well and live well outside of work.
Is job safety a concern for you? Job safety is very
much a concern for me – and thankfully
everyone else at Bruce Tree. We are all
committed to safety and responsibility and
we tend to look out for each other. Safety
meetings and reviews are critical, but you
still always have to be aware.
Why do you think there is such a shortage of trained arborists in Canada and what steps can be taken to rectify
the situation? There needs to be more public
awareness of the arboriculture profession
and the importance of trained arborists,
bylaws and proper tree care. In addition,
government agencies should increase their
policing of permits and enforcement of tree
bylaws. Like certified plumbers or electricians, if we become increasingly mandatory
and in public demand, I feel there would be
a natural increase in recognition for trained
arborists. a
Tamarack Tree Care Ltd. is a vegetation maintenance company
headquartered in Brockville, Ontario that is expanding operations in
Ontario with several full-time positions available. Certified Utility
Arborists are desired along with general foreman and grounds
people. AZ/DZ license preferred. Candidates must have experience
in line clearance and knowledge of the industry. Three years
experience or 6,000 hours required. ISA certification is an asset.
Ontario Industrial Vegetation Exterminator Licence holders positions
also available. Travel may be required.
Starting wage $20-24 depending on position and experience.
Only qualified candidates please apply.
Resumes: email [email protected] or fax 613-498-0085
31
news from supporting organizations
Event Spotlight: Tree Fest to the Tour to Tornadoes
the canadian tree fund. making a difference for trees.
Greetings tree enthusiasts! We are well into 2012 and the TREE Fund is actively involved in this
year’s fund raising initiatives with the hope of once again achieving our $50,000 goal. A great
time was had by all at the 3rd Annual Toronto Tree Fest in June; Team Canada is kicking into high
gear for August’s Stihl Tour des Trees, and then we’ll wind down the summer season with the Harold Van Dyke Memorial Golf Tournament and a reTREEt re-plant (read on for details) in Goderich.
W
ith education and awareness
of urban trees being a major
focus of the Canadian Tree
Fund, Toronto Island was once
again host to the Annual Tree
Fest on Saturday, June 9. A free ferry ride
delivered folks to the starting point of the
Tour of Trees, an interpretive tour identifying many of the unique tree species on the
island. There were three versions – walking,
cycling and the local tram – and all tours
were guided by certified arborists to help
identify, educate and answer questions.
32
The tour ended at Franklin Gardens
where a series of work and play stations
were set up as well as a lively and entertaining stage show. Everyone enjoyed a funfilled and educational afternoon under partly
sunny skies and moderate temperatures with
lots to do, eat, watch and participate in.
The City of Toronto sent some of their
best arborists to give demonstrations of
foot locking, aerial rescue and the uses
of all their fine arboriculture equipment.
The crowd was in awe and we may have
attracted a few new “future arborists” to
the industry. Maple Hill Tree Services set
up and manned a junior tree climb that
allowed kids to scale, unassisted, on a
static line in the tree using friction knots.
Children of all ages were able to ascend
and descend under their own steam (see
photo at bottom of adjacent page).
Jim Menken, a local wood carver who has
been transforming dead tree trunks into wonderful works of art throughout Mississauga
and other municipalities, gave a demonstration and left a carving of an owl behind to
become a permanent feature in the Gardens.
Focus on reTREEt AMERICA
The Canadian Tree Fund is considering the possibility of partnering
with reTREEt America, a not-for-profit organization committed
to planting trees in areas that have been damaged or destroyed
by a natural disaster. Considered “second responders,” reTREEt
arranges cycling/tree planting events in these communities after
the dust has settled. Folks from all over North America come to
volunteer to plant trees on residential properties where everything
may have been lost.
Ontario Event
Goderich: Fall 2012
On stage, the crowd was entertained
musically by award winning children’s
entertainers Splash ‘N Boots and Washboard Hank, a local favourite band. Then
both kids and adults alike were schooled
through wit, humour and audience participation by the talented, yet sometimes
forgetful, Professor Pricklethorn with his
unique method of urban tree education.
And cruising the waters around the
Gardens was local arborist Tyler Ganton in
his dragon boat carved from one piece of
wood, truly an amazing work of art. Tyler
also creates unique, useful furniture from
wood salvaged from his daily practice.
Following the event, Tour des Tree riders planted 20 black willows on the north
shoreline of the island to help prevent
future erosion. Tree Fest certainly seems
to be gaining attention and interest from
not only participants but also other groups,
so stay tuned and don’t miss it next year.
It just keeps getting better! a — Greg Hill
T
he core group is composed primarily of cyclists who have met over the
years through the Tour des Trees and wanted to take the concept of cycling,
planting trees, educating and raising awareness of the value of urban trees
to a whole new level. Added to that, they are putting their time, energy and
resources into helping improve the lives of those who have lost so much by giving them hope with new trees – and helping them realize that they are not alone
and that people outside of their community care. The volunteers who participate
in these events go home with so much more than they left behind because of the
outpouring of gratitude for the gifts they planted. reTREEts are open to anyone,
especially those who want to learn more about tree planting and cycling. And
you don’t have to commit to all events – participate when and where you can.
reTREEt America is planning an event in Goderich
this fall to help replant
residential properties in
the town and outlying
areas which were in the
path of last summer’s
tornado. They will be
partnering with the local
group “Goderich Trees”
who have already done
a great deal for local
residents through spring
tree planting efforts. The local municipality has developed a master plan to replant
trees this fall on public properties with the focus being the main square in the heart
of town (as this was a major attraction prior to the tornado).
Following both of these fall events, Goderich’s new urban forest will be well on its
way. Please consider getting involved as it is sizing up to be a fall that Goderich
will remember for some time to come. Stay tuned for details on the CTF site at
www.canadiantreefund.org and the reTREEt America at www.retreetamerica.org (Facebook www.
facebook.com/retreetamerica). — Greg Hill, CTF Trustee & reTREEt Board Member
33
Tour des Trees
a 20 year tradition!
august 5-11, oregon
It’s never too late to support Team Canada cyclists.
Simply visit our website at www.canadiantreefund.
org and have your credit card handy. Canadians
were the top team fundraiser in 2011 and hope to
repeat in 2012. Read on for tour highlights from
Mary DiCarlo, International TREE Fund.
What’s so special about Tour 2012?
1) It’s our 20th Anniversary! In 1992, thirteen cyclists rolled
out of Seattle on a mission to put their love of cycling and
trees to work for the benefit of the urban forest. One week
and 1,000 miles later they arrived in Oakland, California.
They’d raised $89,000 for ISA’s Research Trust, which became the TREE Fund in 2002, and the consensus at the end
of the ride was “Let’s do this again!” STIHL came on board
in 2009 as the Tour’s Title Sponsor, and in 2011 the Tour
raised a record $512,000 to support tree research and education, surpassing the $5 million mark for total funds raised
by the Tour and effectively raising the bar for all future rides. 2) It’s in Oregon! Every day will be different, challenging
and beautiful. There are good reasons why Oregon is on
every serious cyclist’s “bucket list.”
3) Professor Elwood
Pricklethorn (aka
veteran Canadian
Tour rider Warren
Hoselton) headlines
our educational programming again this
year. Professor Pricklethorn’s entertaining and educational
programs about how
trees grow and why
we need them are
sure to have the kids of Oregon looking at trees in a different light this summer. We owe a big thank you to Warren
for volunteering his time and considerable talent to educate
kids about trees while we’re in Oregon, and to the Canadian
TREE Fund and Bartlett Tree Experts for their support of our
educational programming during the Tour.
34
OCAA 2012: ed lehming
Ontario Arborist Event Calendar
August 5-11, Stihl Tour des Trees
Cyclists will travel 585 miles this summer in Oregon and
Team Canada is counting on your support!
Visit www.canadiantreefund.org to donate and for details...
August 11-15, ISA Conference, Trade Show & Tree Climb
Oregon Convention Centre, Portland, Oregon.
Visit www.isa-arbor.com to register and for details...
Sept. 7, Certified Arborist, Municipal &/or Utility Exam
Location TBA. For more info, contact the ISAO office at
1-888-463-2316 or email [email protected]
September 12 & 14, ISAO Fall Workshop Series
Ottawa & London. Dr. Ed Gilman, theoretical & practical
approaches to pruning. Registration opened July 23rd.
See information on pg. 4 & stay tuned to www.isaontario.com for details...
September 15, ISAO 24th Tree Climbing Championship
London, Ontario, “The Forest City”
See information adjacent & stay tuned to www.isaontario.com for details...
September 23, Golf for Trees!
The Annual Harold Van Dyke Memorial Golf Tournament
will be held at the Highlands Golf Club just north of
Toronto. $120 per person includes 18 holes, cart, dinner
and prizes. Bring your team for best ball scramble!
Visit www.canadiantreefund.org for details (or to sponsor a hole!)...
September 26, National Tree Day
This is the 2nd year that Canada finally has its own official
day to celebrate trees. Start planning your events now!
Visit www.nationaltreeday.ca for details...
October 2-4, CUFC10, Back to the Forest
See ad on pg. 26. City of London, 10th Annual
Canadian Urban Forest Conference.
Visit www.cufc10.ca to register and for details...
from the isao bookstore
Young & Small Tree Pruning
ABC’s Field Guide to Young & Small Tree Pruning. This edition of the Visual Identification
Series by Urban Forestry LLC was created
to simplify the pruning process on small and
young trees. Designed for use in the field, the
guide leads you through the pruning process
with a photographic and illustrated presentation and just enough supporting text.
Item #O2056. Retail: $30.44.
ISAO Member Price: $26.23.
An easy to learn and recall acronym-based
methodology, directs you where to start,
what branches to prune, and when you are
finished. It was designed for a wide range of
users from municipal workers to home owners
who may have little or no experience pruning
trees, to arborists and landscape professionals. (©2012, softcover, spiral bound, 86 pp.)
Supporting Members
Al Miley & Associates
Altec Industries Ltd.
ArbreCare Tree Services
Asplundh Canada ULC
Authentic Tree Care Inc.
Chatham Tree Services
An Illustrated Guide to Pruning
Cressman Tree Maint. & Lands. Ltd.
By Edward F. Gilman. 3rd Edition. This well written
and easy to understand book is a must-have for
anyone interested in the pruning and maintenance of
trees. Filled with updated illustrations, photographs,
and examples, this guide is designed to help readers
understand and implement the appropriate pruning
practices that are vital to developing sustainable
structure in the first 25 years of a tree’s life.
Douglas Wood Large Tree Services
Item #O2054 Retail: $137.80, ISA Member Price: $118.28 (Cnd.
funds). Gilman Canadian Workshops: Sept. 12 & 14 (see pg. 4).
Guardian Tree Systems Inc.
Colonial Tree Service
Davey Tree Expert Co. of Canada Ltd.
Eagle Ridge Tree Movers
Eloquip Ltd.
Four Seasons Tree Care
Gardiner Tree Trimming & Removal Ltd.
Glenwood Tree Service
Goodreau Tree Service
Ground Control
Ingold Tree Service, Inc.
J&A Tree Service
Contact the ISAO office to order: 1-888-463-2316, [email protected]
Kuntz Forestry Consulting Inc.
Maple Hill Tree Service
The Arborist Classifieds
Mount Pleasant Group of Cemetaries
Nisco National Leasing
Ontario Line Clearing & Tree Services
Shady Lane Expert Tree Care Inc.
Multi-Purpose Plastic Sheeting
The Tree Specialists Inc.
4’ x 8’ rigid plastic sheets
3/4“ rotproof, durable, flexible
Vermeer Canada
Ideal for falling branches, driving
over lawns or curbs. $65.00 each.
Contact: Jayne Coley
970-230-0009, [email protected]
Van Dyke’s Tree & Landscape Care Ltd.
Yard-All Tree Service Inc.
Thanks for your support!
Is your name missing? Contact ISAO today to
renew or become a new supporting member.
35
Ontario Fall Training Schedule
Cambridge, Ontario
Tree Climbing, Fall Protection & Work Positioning October 16 & 17
Technical Tree Falling & Cutting
October 18 & 19
Chainsaw Safety & Cutting Techniques
October 30
Production Tree Removal & Rigging
Oct. 31 to Nov. 2
Hazard & Danger Tree Cutting & Fallling
November 12 & 13
Arborist Technical Rigging
November 14-16
did you know? 16 CEUs are awarded for two-day courses & 8 CEUs are given for one-day.
Expert Safety Training & Certification
Your Site. Your Schedule. Our Experts. Call 1.877.268.8733 or visit www.arborcanada.com.

Ontario Arborist

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