Allium caeruleum
blue allium bulbs (syn. Allium azureum)
- 20 × bulbs
- £7.99
- available to order from summer
Delivery options
- Bulbs (only) £4.95
- Position: full sun
- Soil: moderately fertile, moist but well-drained soil
- Rate of growth: average
- Flowering period: June to July
- Hardiness: fully hardy
- Allium bulb size: 4/-
This stunning blue ornamental onion is ideal for a sunny border. Dense globes of small, star-shaped, bright blue summer flowers on stiff stems and narrow, mid-green leaves. Since the leaves die back before the flowers emerge it’s best planted with other medium-sized herbaceous plants, such as sea holly, which help to mask the faded foliage.
Allium bulbs are easy to grow in a sunny spot with freely drained soil, or a good quality potting compost. Ideally they should be planted in September or October, but could also be planted in early November in milder regions. Dig holes roughly three times as deep as the diameter of the bulb and place them at the base, pointy side up before gently infilling and watering to settle them in. In early spring, as growth begins, apply a balanced, slow-release fertiliser, and allow the plants to die back naturally and completely before tidying away.
- Pets: TOXIC if eaten; Humans: Ornamental bulbs - not to be eaten
