Every purchase supports the work of the RHS Every purchase supports the work of the RHS
  • American onion bulbs
  • Eventual height: 0.3m
  • Eventual spread: 0.05m

Allium unifolium

American onion bulbs

RHS award of garden merit £4.99 £3.49
30% off allium bulbs
Pot size 25 bulbs
25 bulbs
Quantity
  • Position: full sun
  • Soil: fertile, well-drained soil
  • Rate of growth: average
  • Flowering period: May to July for flower arrangements
  • Hardiness: frost hardy (may need winter protection)
  • Bulb size: 5/-

    The flowers on this Allium are quite papery, which means they last longer than many of the other varieties. In spring the first sign of growth is the appearance of the strappy foliage. This has usually died off by the time the flowers appear in late spring. The pinky-purple, bell shaped flowers emerge in clusters of up to 20 at a time on top of single stems. A great plant for an alpine bed or to add colour to the front of a mixed border.

  • Garden care: Plant bulbs 5cm deep and 5cm apart in clumps or drifts. Avoid excessive soil moisture and split and divide large clumps in autumn or spring.
  • CAUTION do not eat ornamental bulbs
Share

Goes well with...

  • Artemisia Powis Castle
    Artemisia 'Powis Castle'
    £9.99 Buy
  • Erigeron karvinskianus
    Erigeron karvinskianus
    £8.99 Buy
  • Eryngium bourgatii Picos Amethyst
    Eryngium bourgatii 'Picos Amethyst'
    £9.99 Buy