Japanese Barberry

Denomination: 'Monry'
Trade name: Sunsation
Botanical Name: Berberis thunbergii
Applicant/Holder: Monrovia Nursery Company
18331 East Foothill Boulevard
Azusa, California
United States of America
Breeder: Eilers, Henry, Litchfield, United States of America
Agent in Canada: Cassan Maclean
336 MacLaren Street
Ottawa, Ontario
K2P 0M6
Tel: 613-238-6404 ext. 223
Application Date: 1999-12-16
Application Number: 99-1992
Grant of Rights Date: 2009-05-15
Certificate Number: 3487
Grant of Rights Termination Date: 2027-05-15

Variety Description

Variety used for comparison: 'Aurea Nana'

Summary: The plants of 'Monry' are wider than those of 'Aurea Nana'. 'Monry' has very dense foliage while 'Aurea Nana' has moderately dense foliage. The newly opened leaves of 'Monry' differ slightly in colour from those of 'Aurea Nana'. The upper side of a new, fully expanded leaf of 'Monry' is yellow with light green along the edges, initially, while that of 'Aurea Nana' is yellow to yellow green.


PLANT: upright bushy growth habit, very dense foliage

STEM: light yellow brown new growth with red pink at leaf axils, changes to brown when mature/woody, medium thickness, ribbed
BARBS: yellow with medium red anthocyanin colouration, short

NEW LEAF (FULLY EXPANDED): dark green upper side (initially, light green along edges)
MATURE LEAF: alternate arrangement along stem, broad elliptic, broadly acute apex with mucronate tip, cuneate base, brown green on upper side, no pubescence

Origin & Breeding History: 'Monry' was discovered in 1977 within a group of seedlings growing at the H. E. Nursery in Litchfield, Illinois, United States. The seedlings originated from an uncontrolled cross, believed to include Berberis thunbergii variety 'Aurea' and Berberis thunbergii variety 'Kobold' as the parents. 'Monry' was selected from 50 to 100 seedlings based on its relatively stout, stiff branches and small foliage. The new variety has been further observed at Monrovia Nursery Company in Dayton, Oregon, United States.

Tests & Trials: Trials for 'Monry' were conducted in a polyhouse during the summer of 2007 in St. Thomas, Ontario. The trial included a total of 10 plants each of the candidate and reference varieties. The candidate variety was grown in 7.5 litre containers, while the reference variety was grown in 3.8 litre containers during the summer of 2007. Observations and measurements were taken from 2 year old plants, 10 plants of each variety, on July 18, 2007. All colour determinations were made using the 2001 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'Monry' with reference variety 'Aurea Nana'

Plant width (cm)

  'Monry' 'Aurea Nana'
mean 49.6 23.4
std. deviation 2.85 3.38

Colour of leaf (RHS)

  'Monry' 'Aurea Nana'
newly opened 8A 5A

Colour of new fully expanded leaf (RHS)

  'Monry' 'Aurea Nana'
upper side 143C (initially, N144B along edges) 5A-154B

Click on image for larger view
Japanese Barberry: 'Monry' (left) with reference variety 'Aurea Nana' (right)

Click on image for larger view
Japanese Barberry: 'Monry' (left) with reference variety 'Aurea Nana' (right)

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