Thompson & Morgan
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Allium ramosum

Ornamental Onion

Hardy Bulb

Silvery-white, starry flowers are held aloft on stiff, uypright stems for a simple, understated display. Allium ramosum flowers from May to July, neatly filling the gap between spring and summer when other bulbs are finished and herbaceous borders are yet to bloom. This dainty little Ornamental Onion is undemanding and easy to grow. Perfect for dotting through rock gardens or growing in bold drifts throughout borders. Bulb size 1. Height: 45cm (18"). Spread: 10cm (4").

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How to grow bulbs, corms and tubers


4 for 3 on autumn planting bulbs

Ideal For:
patio, cottage gardens, wildlife gardens, low maintenance garden, cut flower garden
Flowering Period:
May, June, July
full sun
    • 3 allium bulbs

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    • 9 allium bulbs

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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 and will be stated on the product page or in your order acknowledgement page and email.

Orders for packets of seed incur a P&P charge of £1.95.
Orders which include any other products will incur a P&P charge of £4.95.
Where an order includes both packets of seeds and other products a maximum P&P charge of £6.90 will apply - regardless of the number of items ordered.

Please see our Delivery / P&P page for further details and details of any surcharges that may apply to certain destinations.

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