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Allium caeruleum

Garden

Wishlist

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Features

  • BloomsJune to August
  • Height0.5m to 0.65m
  • Spread0.2m to 0.3m
  • Growth HabitStalked clump
  • Flower ColourBright blue, pink
  • Leaf ColourMid green
  • AwardsRHS Garden Merit

Description

Allium caeruleum. Also known as Allium azureum, this frost hardy species from Central Asia has very short, narrow leaves which wither away by the time its flowering stalks have fully grown in size. These bear dense umbels of star-shaped blue flowers in summer.

Characteristics

Perennial, Deciduous, Bulb

Origin

N & C. Asia

Interest and use

Ornamental. Suitable for walls, rock gardens, borders, cottage-style planting.

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Needs

  • LightFull sun
  • HardinessFrost hardy (min -5°C)
  • SoilSandy, Chalky
  • Soil pH6.0 to 8.0
  • WaterSemi-moist

Cultivation

Plant at a depth of approximately 13cm.

Propagation

Propagation is by offsets, by seed in autumn or by division of clumps (spring flowering varieties in late summer and summer flowering varieties in spring).

Pests, diseases or disorders

Prone to white rot, downy mildew, eelworm, rust and onion fly.

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