Mahonia aquifolium
Oregon grape
A vigorous, low, spreading, evergreen shrub with glossy green, slightly prickly leaves becoming purplish in winter. Large clusters of yellow flowers appear in spring, followed by black berries
Synonyms
Mahonia piperianaBerberis aquifolium
Size
Ultimate height
0.5–1 metresTime to ultimate height
5–10 yearsUltimate spread
1–1.5 metresGrowing conditions
Moisture
Moist but well–drained, Well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Yellow | Green | ||
|---|---|---|---|---|
| Summer | Green | Black | ||
| Autumn | Green | Black | ||
| Winter | Green Purple |
Position
- Full shade
- Partial shade
Aspect
South–facing or North–facing or West–facing or East–facing
Exposure
Exposed or Sheltered Hardiness
H5Botanical details
- Family
- Berberidaceae
- Native to the UK
- No
- Foliage
- Evergreen
- Habit
- Bushy
- Potentially harmful
- Berries are ornamental, not to be eaten. Wear gloves and other protective equipment when handling
- Genus
Mahonia are evergreen shrubs with leathery, pinnate leaves which are often spine-toothed, and clustered racemes of sometimes fragrant yellow flowers, sometimes followed by black or purple berries
- Name status
Correct
- Plant range
- W North America
How to grow
Cultivation
Grow in humus-rich moist but well-drained soil, suited to full or partial shade in a sheltered position but tolerant of sun if soil is not too dry. See mahonia cultivation for further information
Propagation
Propagate by seed and semi-hardwood cuttings
Suggested planting locations and garden types
- City and courtyard gardens
- Coastal
- Cottage and informal garden
- Wildlife gardens
- Low Maintenance
- Ground cover
Pruning
Pests
Generally pest-free
Diseases
May be susceptible to a rust and powdery mildews
Get involved
The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.