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APPLICATIONS UNDER EXAMINATION
NINEBARK
NINEBARK
(Physocarpus opulifolius)
Proposed denomination:
Trade names:
Application number:
Application date:
Applicant:
Agent in Canada:
Breeder:
‘ARTBOE401’
Mahogany Magic, Red Robe
12-7745
2012/09/12
Spring Meadow Nursery, Inc., Grand Haven, Michigan, United States of America
BioFlora Inc., St. Thomas, Ontario
Arthur A. Boe, Faribault, Minnesota, United States of America
Variety used for comparison: ‘Seward’ (Summer Wine)
Summary: The branches of ‘ARTBOE401’ are more rigid than the branches of ‘Seward’ which are of medium stiffness.
When the leaf blade is newly open during summer, the colour of the upper side is brown with light green veins and darker
brown along the margin and at the apex for ‘ARTBOE401’ while the upper side is grey brown with light green tones and
darker grey brown along the margin and at the apex for ‘Seward’. The colour of the upper side of the fully open leaf blade of
‘ARTBOE401’ is dark brown with shades of darker brown while the leaf blade of ‘Seward’ is dark green. The colour of the
seed pod of ‘ARTBOE401’ is red pink whereas the seed pod of ‘Seward’ is light green with red pink tips and develops more
red tones with age. Glossiness of the seed pod of ‘ARTBOE401’ is of medium intensity whereas the glossiness of the seed pod
of ‘Seward’ is weak.
Description:
SHRUB: deciduous, upright growth habit, medium density of foliage, medium density of branches
BRANCH: erect attitude, rigid stiffness, dark brown, medium density of secondary branches
SECONDARY BRANCH: red brown, very strong intensity of anthocyanin colouration
LEAF: alternate arrangement along branches, ovate shape, acuminate apex, cordate base, dentate margin, strong degree of
folding when newly open, medium to strong lobing
UPPER SIDE OF LEAF BLADE: weak glossiness, medium prominence of midrib, brown (closest to RHS 176A-B) with
light green (RHS N144A) veins and brown (RHS 166A) at margin and apex when newly open during summer, dark brown
(RHS N200A) with shades of darker brown (RHS 200A) when fully open
LOWER SIDE OF LEAF BLADE: medium prominence of midrib, weak to medium intensity of brown purple (RHS 184A)
anthocyanin colouration of midrib, brown green (closest to RHS 147B-C)
PETIOLE: present
INFLORESCENCE: corymb type
COROLLA: rotate form, inner side is white (RHS NN155B) with light blue pink (RHS 62D) blush, outer side is white (RHS
NN155B) with light blue pink (RHS 62C) stripe along center of each petal
SEED POD: red pink (lighter than RHS 43D), medium intensity of glossiness
Origin and Breeding: ‘ARTBOE401’ was bred and developed by the breeder, Arthur Boe, of Faribault, Minnesota, USA. It
originated from an open pollinated cross conducted in June 2000 between the Physocarpus opulifolius varieties ‘Monlo’ as
the female parent and ‘Nugget’ as the male parent. ‘ARTBOE401’ was selected in 2003 for its plant growth habit, foliage
colour, and foliage appearance. Asexual reproduction of ‘ARTBOE401’ by softwood cuttings was first conducted in July
2003 in Faribault, Minnesota, USA.
Tests and Trials: The comparative trial of ‘ARTBOE401’ was conducted as an outdoor irrigated container trial during the
summer of 2014 at BioFlora Inc. in St. Thomas, Ontario. It included a total of 15 shrubs of the candidate variety and 8 shrubs
of the reference variety. All shrubs were grown from rooted cuttings and transplanted into 13.5 litre containers on June 14,
2013. The trial was arranged in rows with approximately 1 m spacing between shrubs. Observations and measurements were
Plant Varieties Journal, January 2015, No. 94
APPLICATIONS UNDER EXAMINATION
NINEBARK
taken from 10 shrubs or parts of shrubs of each variety on June 20, 2014. All colour determinations were made using the
2007 Royal Horticultural Society (RHS) Colour Chart.
Comparison table for ‘ARTBOE401’
‘ARTBOE401’
‘Seward’*
Colour of upper side of leaf blade (RHS)
newly open during summer
closest to 176A-B with N144A veins and 166A at
margin and apex
fully open
N200A with shades of 200A
closest to N199C with 144A tones and
closest to N199B at margin and apex
darker than N137A
Colour of seed pod (RHS)
outer side
lighter than 43D
*reference variety
Ninebark: ‘ARTBOE401’ (left) with reference variety ‘Seward’ (right)
Plant Varieties Journal, January 2015, No. 94
145C-D with lighter than 47D tips and
developing more red tones with age
APPLICATIONS UNDER EXAMINATION
NINEBARK
Ninebark: ‘ARTBOE401’ (left) with reference variety ‘Seward’ (right)
Proposed denomination:
Trade name:
Application number:
Application date:
Applicant:
Agent in Canada:
Breeder:
‘SMPOTW’
Tiny Wine
12-7741
2012/09/10
Spring Meadow Nursery, Inc., Grand Haven, Michigan, United States of America
BioFlora Inc., St. Thomas, Ontario
Timothy D. Wood, Spring Lake, Michigan, United States of America
Variety used for comparison: ‘Little Devil’
Summary: The plants of ‘SMPOTW’ have branches with fewer fully developed secondary branches than the plants of ‘Little
Devil’. The branches of ‘SMPOTW’ have longer internodes than the branches of ‘Little Devil’. The intensity of anthocyanin
colouration of the secondary branches is weak to medium for ‘SMPOTW’ while anthocyanin colouration of the secondary
branches of ‘Little Devil’ is medium to strong. The colour of the seed pod of ‘SMPOTW’ is brown green and develops red
tones with age while the seed pod of ‘Little Devil’ is brown red.
Description:
SHRUB: deciduous, upright growth habit, medium density of foliage, many branches
BRANCH: erect attitude, medium stiffness, brown, medium intensity of anthocyanin colouration, medium density of
secondary branches
SECONDARY BRANCH: purple red, weak to medium intensity of anthocyanin colouration
LEAF: alternate arrangement along branches, ovate shape, acute apex, truncate to rounded base, dentate margin, strong
degree of folding when newly open, medium to strong lobing
UPPER SIDE OF LEAF BLADE: weak glossiness, weak prominence of midrib, dark green (darker than RHS 147A) when
newly open during summer
LOWER SIDE OF LEAF BLADE: medium prominence of midrib, no anthocyanin colouration of midrib, brown green
(greyer than RHS 147C) when newly open during summer
PETIOLE: present
Plant Varieties Journal, January 2015, No. 94
APPLICATIONS UNDER EXAMINATION
NINEBARK
INFLORESCENCE: corymb type
COROLLA: rotate form, inner side is white (RHS NN155B-C) with occasional light blue pink (RHS 62D) blush, outer side is
white (RHS NN155B-C)
SEED POD: brown green (closest to RHS 146D) developing red tones with age
Origin and Breeding: ‘SMPOTW’ was bred and developed by the breeder, Timothy D. Wood, of Spring Meadow Nursery,
Inc. in Grand Haven, Michigan, USA. It originated from an open pollinated cross that occurred during the summer of 2006
between the Physocarpus opulifolius variety ‘Seward’ as the female parent and a plant known to be a sibling of the variety
‘Seward’ as the male parent. ‘SMPOTW’ was selected in 2008 for its plant growth habit, foliage colour, foliage size, good
mildew resistance, flower bud colour, and production characteristics. Asexual reproduction of ‘SMPOTW’ by softwood
cuttings was first conducted in July 2008 in Grand Haven, Michigan, USA.
Tests and Trials: The comparative trial of ‘SMPOTW’ was conducted as an outdoor irrigated container trial during the
summer of 2014 at BioFlora Inc. in St. Thomas, Ontario. It included a total of 15 shrubs of the candidate variety and 8 shrubs
of the reference variety. All shrubs were grown from rooted cuttings and transplanted into 13.5 litre containers on June 17,
2013. The trial was arranged in rows with approximately 1 m spacing between shrubs. Observations and measurements were
taken from 10 shrubs or parts of shrubs of each variety on July 2, 2014. All colour determinations were made using the 2007
Royal Horticultural Society (RHS) Colour Chart.
Comparison table for ‘SMPOTW’
‘SMPOTW’
‘Little Devil’*
Branch internode length (cm)
mean
2.5
std. deviation
0.18
1.9
0.22
Number of fully developed secondary branches per branch (count)
mean
14.7
std. deviation
2.95
24.8
3.22
Colour of leaf blade when newly open during summer (RHS)
upper side
darker than 147A
lower side
greyer than 147C
147A
147C
Colour of seed pod (RHS)
outer side
closest to 146D developing red tones
with age
closest to 182B
*reference variety
Plant Varieties Journal, January 2015, No. 94
APPLICATIONS UNDER EXAMINATION
Ninebark: ‘SMPOTW’ (left) with reference variety ‘Little Devil’ (right)
Ninebark: ‘SMPOTW’ (left) with reference variety ‘Little Devil’ (right)
Plant Varieties Journal, January 2015, No. 94
NINEBARK
APPLICATIONS UNDER EXAMINATION
Ninebark: ‘SMPOTW’ (left) with reference variety ‘Little Devil’ (right)
Plant Varieties Journal, January 2015, No. 94
NINEBARK