Thompson & Morgan

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Allium Bulbs

Allium bulbs are easy to grow and undemanding summer flowers, adding height and structure to your beds and borders. Read our guide for more information on how to grow bulbs.

Buy alliums online from our range below and you will achieve a striking display in the autumn, when the structural seed heads catch the eye.

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Allium 'Globemaster'

Ornamental Onion

Hundreds of starry lilac-purple blooms form the incredible flower heads of this RHS AGM variety. The magnificent, spherical blooms of Allium 'Globemaster' are up to 15cm (6") across! Flowering only once in a season, the blooms are followed by skeletal seedheads for a spectacular autumn display. Undemanding and easy to grow, these purple alliums are guaranteed to add the 'wow' factor to borders and cut flower arrangements. Height: 80cm (31"). Spread: 15cm (6"). Bulb size 18/20.

Useful links:

How to grow bulbs, corms and tubers


4 for 3 on autumn planting bulbs
More info
    • 1 allium bulb

    • Despatch: Within 28 days
    • £8.99
    • 2 allium bulbs

    • Despatch: Within 28 days
    • £12.99
    • 4 allium bulbs

    • Despatch: Within 28 days
    • £17.99