Stunning allium collection

allium collection

Perfect for pollinators
1 × collection | 45 bulbs £18.95
BU30001747
£18.95
Quantity
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  • Bulbs (only) £4.95
  • Position: Full sun
  • Soil: Moderately fertile, moist, well-drained soil
  • Flowering period: June
  • Hardiness: Fully hardy


These striking alliums can be planted amongst perennials to add an extra layer of flowers, where they appear to 'float' above shorter perennials. Both Allium hollandicum 'Purple Sensation' and Allium nigrum are all-time Chelsea Flower Show favourites, appearing repeatedly through the years in many of the award-winning gardens.




In each collection you will receive the following:

  • 10 × Allium nigrum: The naming of this plant refers to black, but the flower is in fact white. The wide grey-green leaves of this ornamental onion generally have started to die back when the flowers emerge in early summer (June). These sit on tall, sturdy stems forming flattish clusters that create a striking silhouette. Each creamy-white flower has a pronounced ovary at its heart, which looks a little like a dark green pearl nestled in the centre. Plant bulbs about 10cm deep and 25cm apart in September-October. Grows to 1m.

  • 10 × Allium hollandicum 'Purple Sensation': Strap-shaped grey-green leaves start to die back before the densely packed umbels of deep violet, star-shaped flowers appear in early summer. Its striking globe-like architectural silhouette makes it particularly well suited to gravel or prairie-style planting schemes. These alliums are renowned for their large flower heads, which are just as attractive after they have finished flowering as seed heads. Plant bulbs about 15cm deep and 15cm apart to enjoy the full effect of the flowers. Winner of the prestigious Royal Horticultural Society AGM. Also plant in September-October. Grows to 1m.

  • 25 × Allium sphaerocephalon:Small, egg-shaped, claret-coloured flowerheads appear like drumsticks on tall, slender stems above strap-like, mid-green leaves in mid to late summer. Planted en masse in a border in full sun, these diminutive claret flowers look great emerging from a screen of foliage, or against a backdrop of ornamental grasses. They gently fade as summer comes to a close. Grows to 90cm.


  • Garden care: Avoid excessive moisture from late summer when they become dormant. Over-large clumps can be lifted and divided in autumn or spring.
    • Pets: TOXIC if eaten; Humans: Ornamental bulbs - not to be eaten
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