Mahonia × wagneri 'Undulata'
Oregon grape 'Undulata'
An erect evergreen shrub with pinnate leaves composed of spiny-edged, glossy leaves turning purple in winter, and bright yellow flowers in short, clustered racemes in spring
Size
Ultimate height
1.5–2.5 metresTime to ultimate height
10–20 yearsUltimate spread
1.5–2.5 metresGrowing conditions
Moisture
Moist but well–drained, Well–drainedpH
Acid, Alkaline, NeutralColour & scent
Stem | Flower | Foliage | Fruit | |
Spring | Yellow | Green | ||
---|---|---|---|---|
Summer | Green | Black Blue | ||
Autumn | Green | Black Blue | ||
Winter | 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
Accepted
How to grow
Cultivation
Grow in any well-drained or moist but well-drained soil in shade or partial shade. Good for a woodland setting
Propagation
Propagate by seed and semi-hardwood cuttings
Suggested planting locations and garden types
- Architectural
- Wildlife gardens
- Low Maintenance
- Banks and slopes
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.