Waldbolwi

Euonymus

Denomination: 'Waldbolwi'
Botanical Name: Euonymus fortunei
Applicant/Holder: Spring Meadow Nursery, Inc.
12601 120th Avenue
Grand Haven, Michigan
49417
United States of America
Breeder: Karel Waldvogel, Henstest-Ulzburg, Germany
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Canada
Tel: 519-631-6241
Application Date: 2005-03-15
Application Number: 05-4630
Grant of Rights Date: 2008-11-21
Certificate Number: 3397
Date rights surrendered: 2015-11-03

Variety Description

Variety used for comparison: 'Emerald 'n Gold'

Summary: 'Waldbolwi' differs from the reference variety, 'Emerald 'n Gold' mainly in plant height and width, presence of leaf variegation and colour of the upper side of newly opened leaf blades. The plants of 'Waldbolwi' are shorter and narrower than those of 'Emerald 'n Gold'. 'Waldbolwi' has no leaf variegation whereas it is present in 'Emerald 'n Gold'. The upper side of newly opened leaves of 'Waldbolwi' are yellow whereas they are green brown at the margins and dark green in the middle in 'Emerald 'n Gold.

Description:

SHRUB: evergreen leaves; very compact, bushy to spreading growth habit; irregular shape; medium degree of branching; medium to dense foliage
STEM: thin; absent to very weak intensity of anthocyanin colouration; smooth; yellow-green on the new growth

LEAVES: opposite arrangement; simple; ovate; acute and obtuse apex; rounded base; crenate margins; no undulation of the margins; no glossiness on the upper side; smooth texture; variegation absent; petioles present.
NEWLY OPENED LEAVES: yellow on the upper and lower surfaces, green brown (RHS 153A) on the upper surface and light yellow brown (RHS 160A) on the lower surface on the leaves in the mid-section of the shoot; light yellow (RHS 10D) veins.
MAIN COLOUR, MATURE LEAVES: dark green on upper surface; light green on lower surface

Origin & Breeding History: 'Waldbolwi' is a naturally occurring mutation of the parent plant 'Emerald 'n Gold', discovered by the breeder in April 2000 in Henstedt-Ulzburg, Germany. 'Waldbolwi' was selected for the non-variegated, bright yellow colour of the new foliage and winter hardiness. 'Waldbolwi' has been reproduced by softwood cutting since May 2000.

Tests & Trials: Tests and trials for 'Waldbolwi' were conducted in a container grown trial in St. Thomas, Ontario during the summer of 2007. There were 12 plants of the candidate variety and 10 plants of the reference variety, grown from bare root plants, started in 4.4 litres containers in March 2005 and transplanted into 8.8 litres containers in July 2005. Observations and measurements were taken from 10 plants in June 2007. All colour measurements were made using the 2001 RHS Colour Chart.


Comparison tables for 'Waldbolwi' with reference variety 'Emerald 'n Gold'

Plant height (cm)

  'Waldbolwi' 'Emerald 'n Gold'
mean 14.5 30.7
std. deviation 1.02 4.74

Plant width (cm)

  'Waldbolwi' 'Emerald 'n Gold'
mean 24.1 40.6
std. deviation 2.47 4.31

Colour of upper side of newly opened leaf (RHS)

  'Waldbolwi' 'Emerald 'n Gold'
margin 7A 151A
centre 7A 137A

Main colour of leaf blade (RHS)

  'Waldbolwi' 'Emerald 'n Gold'
upper surface 144A 144A at margins; 137A in centre
lower surface 144D greyer than 144B

Click on image for larger view
Waldbolwi
Euonymus: 'Waldbolwi' (left) with reference variety 'Emerald 'n Gold' (right)

Click on image for larger view
Waldbolwi
Euonymus: 'Waldbolwi' (left) with reference variety 'Emerald 'n Gold' (right)

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