Allium 'Mercurius' (PBR)
ornamental onion or allium bulb
- 1 × bulb
- £6.99
- available to order from autumn
- 5 × bulbs
- £25.00 £5.00 each
- available to order from autumn
Delivery options
- Bulbs (only) £4.99
- Position: full sun
- Soil: moderately fertile, moist but well-drained soil
- Rate of growth: average to fast
- Flowering period: May to June
- Hardiness: fully hardy
- Allium bulb size: 10+
Densely packed heads of violet-pink flowers top the tall stems in late spring and early summer. Emerging from a basal clump of rich green foliage, which dies back before the flowers open, it's useful for adding structural interest to borders and pots - and the flowers are loved by bees.
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. While keeping the size of the flowerhead in mind and avoiding overcrowding, 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
