Thompson & Morgan

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Allium Bulbs


Alliums are easy to grow and undemanding summer flowers, adding height and structure to your beds and borders. Ideal as cut flowers, they're also striking in the autumn, when the structural seed heads create an eye-catching display. Read our guide for more information on how to grow bulbs.

We have found 4 products.
 

Allium Collection

Ornamental Onion

Upright stems add a strong vertical accent to cottage garden borders. These magnificent allium bulbs produce an explosion of colour, followed by architectural seedheads that create a spectacular autumn display. Undemanding and easy to grow, these magnificent allium flowers are also excellent for cutting.

  • Allium aflatunese (16 bulbs) - Bulb size 4/5.
  • Allium sphaerocephalon (24 bulbs) - An understated allium with unusual oval shaped, purple green flower heads, that associates beautifully with swaying grasses. Height: 60cm (24"). Spread: 8cm (3").Bulb size 4/5.
  • Allium caeruleum (50 bulbs) - Bright blue globes of starry flowers are carried on stiff upright stems. Height: 60cm (24"). Spread: 8cm (3"). Bulb size 4/5.
  • Allium ‘Purple Sensation’ (10 bulbs) - Globes of starry purple flowers that measure up to 8cm (3") across. Height: 90cm (36"). Spread: 10cm (4"). Bulb size 10/12.

Useful links:

How to grow bulbs, corms and tubers 

 More info
    • 100 bulb mix

    • Despatch: By end of September 2013
    •  
    • £19.99

Alliums 'Big Impact Mixed'

Ornamental Onion
  • Customer favourite
Add height and structure to your borders with these superb summer-flowering bulbs. Undemanding and easy to grow, Allium ‘Big Impact Mixed’ will give you a wonderful assortment of flower shapes, sizes and colours that are superb for cut flower displays. Don't forget that their attractive and architectural seed heads will also add autumnal interest later in the season. Height ranges from: 60 -90cm (24-36"). Spread: 15cm (6"). Bulb size: 14/16.

Useful links:

How to grow bulbs, corms and tubers 

 More info
    • 8 bulbs

    • Despatch: By end of September 2013
    •  
    • £11.99
    • 16 bulbs

    • Despatch: By end of September 2013
    • SAVE £6.99  
    • £23.98 £16.99
    • 32 bulbs

    • Despatch: By end of September 2013
    • SAVE £22.97  
    • £47.96 £24.99

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. More info
    • 1 bulb

    • Despatch: By end of September 2013
    •  
    • £8.99
    • 2 bulbs

    • Despatch: By end of September 2013
    •  
    • £12.99
    • 4 bulbs

    • Despatch: By end of September 2013
    •  
    • £19.99