Mahonia × wagneri 'Undulata'
Oregon grape 'Undulata'
An erect evergreen shrub to about 2m tall, with pinnate leaves composed of spiny-edged, glossy leaves turning red-purple in winter, and bright yellow flowers in short, clustered racemes in spring, followed by blue-black fruits
Size
Ultimate height
1.5–2.5 metresTime to ultimate height
5–10 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 | Blue Black | ||
| Winter | Purple |
Position
- Full shade
- Partial shade
- Full sun
Aspect
South–facing or North–facing or West–facing or East–facing
Exposure
Sheltered Hardiness
H5Botanical details
- Family
- Berberidaceae
- Native to the UK
- No
- Foliage
- Evergreen
- Habit
- Bushy, Spreading branched
- 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 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 semi-ripe cuttings
Suggested planting locations and garden types
- Architectural
- Coastal
- Cottage and informal garden
- Wildlife gardens
- City and courtyard gardens
- Low Maintenance
Pruning
Pests
Generally pest-free
Diseases
Generally disease-free
Get involved
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