Students for Stewardship The Cork Board
← Back to the library

Winter Sun

Berberis (BER-ber-is hor-TEN-sis)

Family: Berberidaceae Unknown Shrub (3-15 ft)

'Winter Sun' mahonia is a a cultivar developed in 1966 and is a statuesque, evergreen shrub that makes an interesting focal point for the winter garden. In December, 'Winter Sun' lights up any garden with its bright yellow flower spikes perched above its course-textured, almost holly-looking, foliage. Chosen as an improved selection in Ireland in 1966, this mahonia hybrid is a relative newcomer to the Carolinas. It has a more compact habit with more fragrant flowers than the common leatherleaf mahonia. Even with its compact growth habit, 'Winter Sun' will still reach a height of 8 feet if left unpruned. Set out this mahonia in a partially shaded and protected location. Additional water is essential during prolonged summer droughts. Mulch the root area to protect in winter and help retain moisture in summer. As an added benefit, the plant produces grape-like clusters of robins egg-blue berries in late spring that songbirds love to eat. Insects, Diseases, and Other Plant Problems: No significant problems More information on Berberis x hortensis .

Source: NC State Extension Gardener Plant Toolbox ↗ NC State Extension Gardener Plant Toolbox, 66 attributes.

How it fits the guild

Guild layer 3 - Shrub (3-15 ft) Optimal soil pH Acid (<6.0); Alkaline (>8.0); Neutral (6.0-8.0)
See companions & conflicts ↓

Companions & Conflicts

Curated pairwise relationships between this plant and others in the library — who feeds whom, who competes, who confuses the pests. Green reads as a good pairing, red as one to avoid.

No curated interactions recorded for this species yet.

Also noted by NC State

Related species the NC State Plant Toolbox flags for this plant — look-alikes to tell apart, and plants that play a similar role in a planting. Ones we carry in the library are linked.

Fills a similar niche Berberis x hortensis Ilex aquifolium Smilax smallii
Native alternatives Berberis canadensis

Full plant profile

Growing Conditions
Plant type
Perennial; Poisonous; Shrub
Life cycle
Perennial; Woody
USDA zones
6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b
Light
Dappled Sunlight (Shade through upper canopy all day) | Partial Shade (Direct sunlight only part of the day, 2-6 hours)
Soil texture
High Organic Matter
Soil pH
Acid (<6.0); Alkaline (>8.0); Neutral (6.0-8.0)
Soil drainage
Good Drainage | Moist
Available space
3 feet-6 feet; 6-feet-12 feet
NC region
Coastal; Piedmont
Mature size
Height: 6 ft. 0 in. - 10 ft. 0 in. | Width: 4 ft. 0 in. - 7 ft. 0 in.
Growth rate
Slow
Maintenance
Medium
Canopy layer
3 - Shrub (3-15 ft)
Form & Appearance
Habit / form
Erect; Spreading
Texture
Coarse
Foliage
Broadleaf Evergreen
Leaf color
Green
Leaf type
Compound (Pinnately , Bipinnately, Palmately)
Leaf arrangement
Opposite
Leaf shape
Elliptical
Leaf margin
Serrate
Leaf feel
Glossy; Leathery
Leaf value
Showy
Leaf size
1-3 inches long, 1-3 inches wide
Hairs present
No
Leaf detail
Compound leaves with 7-11 pairs of leaflets are holly-like with a glossy, leathery appearance and serrated edges. Fall color is purplish-red.
Fall color
Purple/Lavender; Red/Burgundy
Flower color
Gold/Yellow; Green
Flower value
Fragrant; Long-lasting; Showy
Flower form
Raceme
Flower shape
Bell
Flower size
< 1 inch
Flower detail
Racemes of bright yellow bell-shaped flower in late winter to early spring.
Bloom time
Fall; Winter
Fruit color
Black; Blue
Fruit type
Berry
Fruit value
Edible
Fruit size
< 1 inch long, < 1 inch wide
Fruit detail
Clusters of robins egg-blue berries in fall
Wildlife & Ecology
Native status
Unknown
Wildlife value
Early nectar source.
Attracts
Bees; Butterflies; Songbirds
Food & Medicine
Edible parts
Fruit
Harvest time
Fall; Summer
Fruit type
Berry
Landscape Use
Landscape location
Woodland
Landscape theme
Winter Garden
Design feature
Foundation Planting; Specimen
Garden tags
#evergreen #winter interest #bird friendly #winter flowers #spines #partial shade tolerant #showstopper #shade garden #fall interest #perennial #wildlife friendly #fragrant flowers #poisonous if ingested
Problems & Resistance
Insect problems
Twobanded Japanese Weevil; Soft Scale Identification and Management on Ornamental Plants; Indian Wax Scale Insect
Problems
Poisonous to Humans; Problem for Children; Spines/Thorns
Resistant to
Deer; Drought
Propagation
Stem Cutting
Poison severity
Low
Poison parts
Bark; Leaves; Roots; Sap/Juice
Poison symptoms
Ingestion of the toxic parts can cause stomach upset, nausea, vomiting, and diarrhea.
Toxic principle
Berberine, a benzylisoquinoline alkaloid
Contact dermatitis
No
Toxicity summary
Low severity poison; parts: Bark; Leaves; Roots; Sap/Juice

Planted at Hunnicutt

Nobody’s planted this one yet.