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Allium caeruleum

Allium azureum, Ornamental Onion, Blue Drumstick Allium

Hardy Bulb

What is Hardy Bulb?

Bright blue globes of starry flowers

Perfect for dotting among herbaceous perennials

Adds structure to cut flower displays

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Description How to Grow More Info Delivery
A true blue Allium with globes of tiny flowers perched atop stiff, upright stems. The foliage of Allium caeruleum often dies back before the flowers emerge so it is best planted among leafy herbaceous perennials where the yellowing foliage can be hidden out of sight. A lovely choice for delivering little punches of colour to sunny borders. Plant them in groups for the best effect! Be sure to grow some spares for cutting to add texture and interest to early summer bouquets. Height: 60cm (24"). Spread: 8cm (3").

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How to plant bulbs, corms and tubers

Height Up to 60cm (24in)
Spread Up to 10cm (4in)

Hardy Bulb

cottage gardenswildlife gardenslow maintenance gardencut flower garden

full sun

Flowering Months
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20 Bulbs (KC1292)

Alliums thrive in light sandy, well drained soil in full sun. Avoid planting in cold wet soils as the bulbs are prone to rot in these conditions. Plant allium bulbs at a depth of 10cm (4") and a distance of 10cm (4") apart. A slow release fertilizer can be added to poor soils at the time of planting to improve fertility. When growing alliums, plant them where the leaves of other plants will cover the base of their stems. This will hide the old foliage which dies back before flowering begins.
Alliums require little maintenance. Leave stems of faded allium flowers intact to enjoy their spectacular seedheads in autumn. Divide overcrowded clumps of alliums after flowering. Caution: irritant to skin and eyes.

Seeds and garden supplies will normally be delivered within the time period stated against each product as detailed above. Plants, bulbs, corms, tubers, shrubs, trees, potatoes, etc. are delivered at the appropriate time for planting or potting on. Delivery times will be stated on the product page above, or in your order acknowledgement page and email.

Orders for packets of seed incur a delivery charge of £2.99.

Orders which include any other products will incur a delivery charge of £6.99.

Where an order includes both packets of seeds and other products, a maximum delivery charge of £7.99 will apply - regardless of the number of items ordered.

Large items may incur a higher delivery charge - this will be displayed in your shopping basket.

Please see our Delivery page for further details, and more information on different charges that may apply to certain destinations.

For more information on how we send your plants please visit our Helpful Guide on plant sizes.

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