Allium 'Mont Blanc'
allium 'Mont Blanc'
Tall, bulbous perennial to about 1m with broad, greyish-green, strap-shaped leaves that die back as the flowers open. Star-shaped flowers, white with a hint of green, are carried in dense, spherical heads in late spring and early summer
Size
Ultimate height
0.5–1 metresTime to ultimate height
2–5 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Moisture
Moist but well–drained, Well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | White | Green Grey Silver | ||
|---|---|---|---|---|
| Summer | White | Green Grey Silver | ||
| Autumn | ||||
| Winter |
Position
- Full sun
Aspect
South–facing or West–facing
Exposure
Sheltered Hardiness
H5Botanical details
- Family
- Amaryllidaceae
- Native to the UK
- No
- Foliage
- Deciduous
- Habit
- Columnar upright
- Genus
Allium are bulbous herbaceous perennials with a strong onion or garlic scent, linear, strap-shaped or cylindrical basal leaves and star-shaped or bell-shaped flowers in an umbel on a leafless stem
- Name status
Accepted
How to grow
Cultivation
Grow in fertile, well-drained soil. Add grit to clay soils to improve drainage. See allium cultivation
Propagation
Propagate by removing offsets in autumn
Suggested planting locations and garden types
- Architectural
- City and courtyard gardens
- Cottage and informal garden
- Gravel garden
- Wildlife gardens
- Cut flowers
- Flower borders and beds
Pruning
No pruning required
Pests
Generally pest-free
Diseases
Generally disease-free but may be susceptible to onion white rot and downy mildews
Get involved
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