Every purchase supports the work of the RHS Every purchase supports the work of the RHS
  • ornamental onion bulbs
  • Eventual height: 1.8m
  • Eventual spread: 0.15m

Allium giganteum

ornamental onion bulbs

Perfect for pollinators £3.99 £2.79
30% off allium bulbs
Pot size 1 bulb
1 bulb
Quantity
  • Position: full sun
  • Soil: fertile, well-drained soil
  • Rate of growth: average
  • Flowering period: June to July
  • Hardiness: fully hardy
  • Bulb size: 18/20

    Dense globes of small, star-shaped, lilac-pink summer flowers on towering stems appear in summer above pale green leaves, which tend to die back before the flowers appear. This gorgeous ornamental onion - the tallest currently available - is perfect for providing vertical interest in a sunny border. Try it dotted in small groups among ornamental grasses, or as part of a Mediterranean scheme.

  • Garden care: Plant the bulbs 15cm deep and 20cm apart to avoid the flowers being to crowded. Avoid excessive soil moisture and split and divide large clumps in autumn or spring.
  • CAUTION do not eat ornamental bulbs
Share

Goes well with...

  • Laburnum × watereri Vossii
    Laburnum × watereri 'Vossii'
    £79.99 Buy
  • Melianthus major
    Melianthus major
    £17.99 Buy