Goldbolwi

Euonymus

Denomination: 'Goldbolwi'
Botanical Name: Euonymus japonicus
Applicant/Holder: Spring Meadow Nursery, Inc.
12601 120th Avenue
Grand Haven, Michigan
49417
United States of America
Breeder: Christian Bolwijn, Putten, Netherlands
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Canada
Tel: 519-631-6241
Application Date: 2005-05-04
Application Number: 05-4834
Grant of Rights Date: 2008-11-21
Certificate Number: 3396
Date rights surrendered: 2013-11-27

Variety Description

Variety used for comparison: 'Golden Maiden'

Summary: 'Goldbolwi' differs from the reference variety, 'Golden Maiden' mainly in plant width, leaf blade glossiness and amount of yellow covering the leaf lamina. The plants of 'Goldbolwi' are narrower than those of 'Golden Maiden'. The leaves of 'Goldbolwi' have medium glossiness whereas it is strong in 'Golden Maiden'. There are large amounts of yellow covering the leaf lamina of 'Goldbolwi' whereas it is absent to small to medium in 'Golden Maiden'.

Description:

SHRUB: evergreen leaves; upright growth habit; medium degree of branching; medium density of foliage
STEM: thin; no anthocyanin colouration on new growth; smooth; yellow-green on the new growth

LEAVES: opposite arrangement; simple; elliptic to oblanceolate; acute apex; cuneate to attenuate base; crenate to weakly serrate margins; no undulation of the margins; medium glossiness on the upper side; smooth texture; variegation present; petioles present
NEWLY OPENED LEAVES: yellow to light yellow in the central area; yellow orange (RHS 14B) on developing leaves, dark green towards the margins
MAIN COLOUR, MATURE LEAVES: large amounts of yellow; yellow to light yellow in the centre, dark green at the margins on upper surface; light yellow in the centre with brown green at the margins on lower surface

Origin & Breeding History: 'Goldbolwi' is a naturally occurring mutation of the parent plant 'China Gold', discovered by the breeder in 1996 in Putten, the Netherlands. 'Goldbolwi' was selected for its variegated yellow and green foliage. 'Goldbolwi' has been reproduced by softwood cuttings since January 1998.

Tests & Trials: Tests and trials for 'Goldbolwi' 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 May 2007. All colour measurements were made using the 2001 RHS Colour Chart.


Comparison tables for 'Goldbolwi' with reference variety 'Golden Maiden'

Plant height (cm)

  'Goldbolwi' 'Golden Maiden'
mean 27.3 29.8
std. deviation 4.17 2.67

Plant width (cm)

  'Goldbolwi' 'Golden Maiden'
mean 20.6 31.3
std. deviation 3.64 4.89

Colour of upper side of newly opened leaf (RHS)

  'Goldbolwi' 'Golden Maiden'
margin 143A 146A
centre 9B-C 9A-C

Main colour of upper surface of leaf blade (RHS)

  'Goldbolwi' 'Golden Maiden'
margin 147A & 139A 139A
centre 9B-C 8B

Main colour of lower surface of leaf blade (RHS)

  'Goldbolwi' 'Golden Maiden'
margin 146A-B 146B-C
centre 10B 10B

Click on image for larger view
Goldbolwi
Euonymus: 'Goldbolwi' (left) with reference variety 'Golden Maiden' (right)

Click on image for larger view
Goldbolwi
Euonymus: 'Goldbolwi' (left) with reference variety 'Golden Maiden' (right)

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