Allium sphaerocephalon

Allium sphaerocephalon is a small-headed rich, blackcurrant allium is later-flowering than most and invaluable for that. I love it in bud, as much as in full flower, very pretty and will gently self-sow. More
150 bulbs 260011-150 £13.50

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40 bulbs 260011-40 £3.95

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80 bulbs 260011-80 £7.50

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Or buy this as part of our Fantastic Allium Collection.

More Details

Allium sphaerocephalon is a small-headed rich, blackcurrant allium that is later-flowering than most and invaluable for that. I love it in bud, as much as in full flower, very pretty and will gently self-sow.

Genus Allium
Variety sphaerocephalon
Type Hardy Perennial Bulb
Common Name Ornamental onion
Border Position Middle
Bulb Size 5/6

For more info on bulb sizes, click here.

Soil Type Chalky, Sandy, Fertile
Scent Unscented
Site Full Sun
Moisture Well-drained
Height 60-90cm (2-3ft)
Spacing Plant 10-15cm (4-6in) deep, 10-15cm (4-6in) apart.
Care Tips Remember these are very perennial so plant them somewhere permanent. Removing the tatty foliage doesn't appear to affect the bulbs. Add grit on heavy soils.
Flowering July - August
Vase Life Add a drop of bleach to the water to minimise the oniony smell or change the water regularly. They will look good for up to 2 weeks without rearranging.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  • Sow Under Cover/Plant Indoors
  • Direct Sow/Plant Outdoors
  • Flowers/Harvest
Advice
Planting numbers for bulbs in borders

A handy guide for how many alliums, narcissi, tulips, snowdrops and other bulbs to plant in your plot.

How to plant and grow allium bulbs

Sarah's top tips on how to plant and grow allium bulbs for fantastic flowers in the garden or vase.

Delivery

Bulb Delivery - When in stock, outdoor bulbs are normally despatched within 2-3 working days. During the busy months of February and September/October, it can take up to two weeks for delivery, due to the number of orders being processed. Please note, we despatch all of our orders in the order they were placed.

Click here to find out more information about our delivery rates and times.

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Allium sphaerocephalon reviews

* * * * * Average based on 3 reviews
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The Bees Knees

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Reviewed 23rd July 2016 by Karen

I bought these from Sarah Raven last year, and every bulb was lovely and firm and every one has come up. They look fabulous through my stipa tenuissima and they are smothered in bees, such a lovely sight and a lovely sound. Highly recommend these bulbs, and I will be back for more before long.

Loved by honey bees

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Reviewed 9th August 2015 by Sue Mills

I've really enjoyed these throughout July and now into August and I am not the only one, these are adored by honey bees, several exploring each head every time I go to look.

A Must for the Nectar Bar

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Reviewed 16th June 2014 by Arthur

I planted this last year in drifts. At the time of writing the deep blackcurrant blooms are looking fantastic and almost everyone has a bee clambering around upon it. Its a great allium to look forward to seeing as all the other types have long since finished flowering.