Allium atropurpureum

Rich, dramatic and beautifully distinctive, Allium atropurpureum produces deep wine-red to almost black-purple flower heads that add depth and contrast to early summer planting.

Unlike the perfectly round globes of many alliums, this variety forms slightly looser, flattened heads made up of star-shaped florets, giving it a more natural and textured appearance. Its striking colour makes it ideal for pairing with lighter tones, ornamental grasses, or silvery foliage plants.

Flowering in late spring to early summer, Allium atropurpureum brings strong architectural interest to borders and works particularly well in cottage garden and contemporary planting schemes. Its flowers are highly attractive to bees and pollinators, and the seed heads can be left in place for added structure after flowering.

Perfect for the middle of borders or planted in drifts, this allium provides a sophisticated and eye-catching display with minimal effort.

Planting Instructions

When to Plant:
Plant in autumn (September to November) before the first hard frost.

Where to Plant:
Choose a sunny position with well-drained soil. Alliums dislike sitting in wet soil over winter.

How to Plant:

• Depth: Plant bulbs 10–15 cm deep.
• Spacing: Space bulbs 10–15 cm apart.
• Position: Place the pointed end of the bulb facing upwards.

Care Tips:

• Water well after planting, then only during prolonged dry spells.
• Leave foliage to die back naturally after flowering to feed the bulb for next year.
• Suitable for borders, gravel gardens, and cutting.

Plant Details

Flowering Time:

Late spring to early summer (June / July).

Height:

Typically reaches 20–50 cm tall.

Hardy