Allium 'Globemaster'

ornamental onion or allium bulb

Eventual height & spread

Allium 'Globemaster'

ornamental onion or allium bulb

  • 2 + 1 FREE 2 litre pots
  • £35.98 £53.97
  • available to order from spring
  • 2 litre pot | 1 per pot
  • £17.99
  • available to order from spring
  • 1 × bulb
  • £7.99
  • available to order from summer
Delivery options
  • Standard £5.95
  • Position: full sun
  • Soil: fertile, well-drained soil
  • Rate of growth: average
  • Flowering period: July
  • Hardiness: fully hardy
  • Allium bulb size: 18/20


The spherical heads of 'Globemaster' can grow up to 15cm across, and they are made up of numerous star-shaped, sterile flowers. These appear in midsummer, and look great in pots, but they can also be woven through a sunny border, dotted in groups among lower-growing perennials that will mask their foliage, which usually dies back before the flowers emerge.


  • Garden care:
    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

    Goes well with