Allium Cowanii

Common name: Ornamental Onion

Perhaps time to brighten your garden with Allium neapolitanum 'Cowanii', its vibrant purple blooms You will haveing a splash of colour.

-15 to -20°C
Good Cut Flowers
Good for Pollinators

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One of the earliest flowering of the family, Allium cowanii puts on a stunning show for several weeks in late May and early June.Large heads of pure white flowers are held on wiry stems, reaching a height of approximately 40cm. Excellent planted in bold drifts, where the drought tolerant bulbs will happily naturalise. Allium were once known for their medical, culinary, and aphrodisiac qualities, the foliage emits a slightly oniony fragrance when crushed. Nowadays alliums are a favourite in RHS Show Gardens and we think that no garden should be without at least one.Allium are both deer and rabbit resistant and look incredible when used as cut flowers, lasting well in a vase. Much loved by bees and butterflies, they are drought tolerant and happy even in poor soils preferring well-drained soil in sun. A hardy bulbous perennial that can be left in the ground, dying back over winter to sprout again in the spring.
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Key Information
Latin Name Allium Cowanii 5+ bulb size 30 bag
Common Name Ornamental Onion
Hardiness H6 (-15 to -20°C)
Colour White
Format Bulbs
Position Full-Sun
Height in Maturity (m) 0.40
Spread in Maturity (m) 0.25
Soil Conditions Chalk Clay Loam Sand
Aspect East-facing, North-facing, South-facing, West-facing
Drought Tolerant Yes
Good for pots Yes
Good for Rockeries Yes
Good for wildlife Yes
Good for pollinators Yes
Good for cutting Yes

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