SMNPOTWG

Ninebark

Variety Description

Variety used for comparison: 'Bert Dart's Gold' (Festivus Gold)

Summary: The shrub of 'SMNPOTWG' is narrower than the shrub of 'Bert Dart's Gold'. The shrubs of 'SMNPOTWG' have very many branches while those of 'Bert Dart's Gold' have many branches. The leaf blade of 'SMNPOTWG' is smaller than the leaf blade of 'Bert Dart's Gold'. The inflorescence of 'SMNPOTWG' is smaller in diameter than the inflorescence of 'Bert Dart's Gold'. The corolla of 'SMNPOTWG' is smaller in diameter than the corolla of 'Bert Dart's Gold'.

Description:

PLANT: bushy rounded shape, dense foliage, very many branches, many brachlets

BRANCH: erect to semi-erect attitude, medium stiffness, dark brown bark
CURRENT YEAR'S STEM: light green, weaker intensity of anthocyanin colouration on basal half, medium to strong intensity of anthocyanin colouration on distal half

LEAF: alternate arrangement along stem
PETIOLE: present
LEAF BLADE: ovate, acute apex, obtuse base, dentate and crenate margin, weak to medium depth of sinus between lobes
LEAF BLADE (UPPER SIDE): weak glossiness, absent or very weak prominence of midrib, yellow orange (RHS 13B-C) transitioning to light green (RHS 144B) in spring, brown green (lighter than RHS 138A) in summer
LEAF BLADE (LOWER SIDE): strong prominence of midrib, light yellow (RHS 12C) in spring, light green (RHS 138C) in summer, absent to very weak intensity of anthocyanin colouration of midrib

INFLORESCENCE: corymb formation
FLOWER: rotate shape
COROLLA: white (RHS NN155B) on inner and outer sides

SEED POD: brown

Origin & Breeding History: 'SMNPOTWG' originated from an open-pollinated cross conducted by Timothy D. Wood, an employee of Spring Meadow Nursery, Inc., in Grand Haven, Michigan, USA in 2010. The cross occurred between the female parent, an unnamed seedling, and an unknown male parent. From the resulting progeny, 'SMNPOTWG' was selected in Grand Haven, Michigan in the summer of 2013 based on dwarf plant growth habit, small leaf size, yellow green leaf colour, good mildew resistance and good production characteristics. 'SMNPOTWG' was first propagated by softwood cuttings in the summer of 2013 in Grand Haven, Michigan.

Tests & Trials: The comparative trial for 'SMNPOTWG' was conducted as an outdoor irrigated container trial during the summer of 2017, at BioFlora Inc. in St. Thomas, Ontario. The trial included a total of 12 shrubs of the candidate variety and 10 shrubs of the reference variety. All plants were grown from liners and transplanted into 11.4 litre containers on July 15, 2016. All plants were overwintered in an unheated double polyhouse. Observations and measurements were taken from 10 plants, or parts of plants, of each variety on July 16, 2017. Flower data was collected on June 3, 2017. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'SMNPOTWG' with reference variety 'Bert Dart's Gold'

Plant width (cm)

Leaf blade length (cm)

Leaf blade width (cm)

Inflorescence diameter (cm)

Corolla diameter (cm)

Click on image for larger view

Ninebark: 'SMNPOTWG' (left) with reference variety 'Bert Dart's Gold' (right)

Click on image for larger view

Ninebark: 'SMNPOTWG' (left) with reference variety 'Bert Dart's Gold' (right)

Click on image for larger view

Ninebark: 'SMNPOTWG' (left) with reference variety 'Bert Dart's Gold' (right)