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New show coming to Rotherham: RHS Flower Show Wentworth Woodhouse

RHS Member tickets from £26.85, plus online booking fee. Under 16s go free!

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© RHS/Joanna Kossak

Introducing...

Allium

Common name: Ornamental onion

Alliums include many familiar edible plants such as onions, leeks and garlic as well as attractive flowering types. The ornamental types are a great addition to the garden with their showy flowerheads in shades of blue, purple, white and pink, bringing globes of colour in spring and early summer. They are good cut flowers and the dried flowerheads give a long lasting display.

Growing guide

Browse alliums

Edible alliums

Border alliums

Specialist alliums

Alliums at RHS Harlow Carr

Buy alliums from RHSplants.co.uk

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The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.