Allium Caeruleum is a distinctive ornamental allium producing striking globe-shaped flower heads packed with vivid sky blue star-shaped florets. Flowering during May and June, each perfectly rounded bloom reaches approximately 3cm in diameter and is held on sturdy stems growing to around 60cm tall. This unique blue flowering allium adds exceptional colour, structure and architectural interest to borders while attracting bees and other beneficial pollinators.

Ideal for mixed borders, gravel gardens, cottage gardens and naturalistic planting schemes, Allium Caeruleum thrives in well-drained soil and full sun. Its unusual blue flowers contrast beautifully with ornamental grasses and summer perennials, while the long-lasting blooms also make excellent cut or dried flowers for floral arrangements.

Key Features
✓ Unique sky blue globe-shaped flower heads
✓ Flowers during May and June
✓ Flower heads approximately 3cm in diameter
✓ Flowering height of approximately 60cm
✓ Excellent for borders and naturalistic planting
✓ Attractive to bees and pollinators
✓ RHS Plants for Pollinators
✓ Ideal for cut and dried flower arrangements

Size
✓ Flowering height: approximately 60cm (24 inches)
✓ Flower head diameter: approximately 3cm

Planting & Growing
✓ Planting time: September to December
✓ Flowers: May to June
✓ Position: full sun
✓ Soil: fertile, well-drained soil
✓ Planting depth: approximately 10–15cm (4–6 inches)
✓ Spacing: approximately 10–15cm (4–6 inches) apart
✓ Suitable for borders, gravel gardens, wildlife gardens and containers

Aftercare
Allow the foliage to die back naturally after flowering so the bulbs can store energy for the following season. Remove spent flower heads if preferred, or leave them standing to provide attractive architectural interest. Lift and divide congested clumps every few years if required.