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Allium 'Bizar'
  • RHS Plants for pollinators

allium 'Bizar'

Bulbous perennial with linear leaves in spring, dying back in summer. Narrow, upright stems to 1m support clusters of dark red bulbils in place of flowers. These produce further fine, curved or twisted stems with tiny bulbils at the tips, flowering in spring

Size
Ultimate height
0.5–1 metres
Time to ultimate height
1–2 years
Ultimate spread
0.5–1 metres
Growing conditions
Chalk
Loam
Sand
Moisture
Moist but well–drained, Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Red Green
Autumn
Winter
Position
  • Full sun
Aspect

South–facing or West–facing

Exposure
Sheltered
Hardiness
H5
Botanical details
Family
Amaryllidaceae
Native to the UK
No
Foliage
Deciduous
Habit
Clump forming
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

Unresolved

How to grow

Cultivation

Grow in fertile, well-drained soil in full sun. Add grit to clay soils to improve drainage. See allium cultivation

Propagation

Propagate by removing offsets in autumn or by bulbils

Suggested planting locations and garden types
  • City and courtyard gardens
  • Patio and container plants
  • Cottage and informal garden
  • Wildlife gardens
  • Cut flowers
  • Flower borders and beds
Pruning

No pruning required

Pests

Generally pest-free

Diseases

Onion white rot and a downy mildew may occur

Get involved

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