Allium 'Atropurpureum'

Delivery begins from 14 September 2026
Spring flowering bulbs and plants are scheduled to begin delivery from 14 September 2026.

10 bulbs
£4.89
£0.49 each
30 bulbs
£13.29
£0.44 each
Save 9%
60 bulbs
£22.19
£0.37 each
Save 24%

Delivery begins from 14 September 2026

Carbon-Neutral Delivery

Our "Bloom or Bust" Promise

Atropurpureum, often admired for its deep purple colouring, is a bulb variety especially well suited to borders.

Allium atropurpureum brings a beautifully saturated note to late-spring borders: deep purple-red, half-spherical flowerheads poised on slender stems above neat green foliage. It slips effortlessly through tulips and early perennials, adding height and quiet drama without ever feeling heavy.

A refined choice for modern planting schemes, it also makes a smart cut flower and is notably attractive to pollinators. Plant in autumn for an elegant show in May and June.

  • Colour: Deep purple-red globes
  • Flowering: May–June
  • Height: 60cm
  • Best for: Borders, containers and cutting
Botanical name Allium atropurpureum
Flower colour Deep purple
Bulb size 10/12
Established height 60cm
Established spread 20cm
Plant spacing 20cm
Leaf colour Green
Habit Clump-forming, upright
Life cycle Perennial
Hardiness Fully Hardy
Years to establish 2
Sunlight Full-Sun, Partial Sun
Position South-, West- or East-facing
Suitable for Borders, Containers, Cut Flowers, Pollinators
Soil acidity Any
Soil moisture Well-drained
Soil type Clay
RHS Award (AGM) No
Growing skill Easy
Pollinator-friendly Yes
Deer resistant Yes

Where to Plant:

Allium 'Atropurpureum' needs full-sun, partial sun and a warm, sheltered position for the best flowering. Plant into fertile, humus-rich soil that drains well, and choose a spot protected from strong winds, especially for taller varieties.

How to Plant:

Plant bulb from September to December once conditions are suitable. Set them at the correct depth for the variety, spacing 20cm apart where relevant, then firm in gently and water well after planting.

Aftercare:

Water regularly in dry weather and feed every two to three weeks once buds appear. Stake taller stems early and deadhead to keep plants flowering. After flowering, allow foliage to die back naturally before lifting or protecting bulb according to local conditions.

Planting and Flowering Calendar

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Planting
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Key Features

Packed in paper

Packed peat-free

Great for Shade

Attracts wildlife

Good for cutting

Naturalising

Allium 'Atropurpureum' - Harding & Bloom

Allium 'Atropurpureum'

£4.89

£4.89

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Kind Words from Our Gardeners

Arrived quickly and well-packaged. Planted them in some pots on the patio and they all came up. Look beautiful. Thank you!

Careane Wallace

Oxfordshire, UK

The bulbs arrived beautifully packaged and you could just tell they were excellent quality. We had the most wonderful display of daffodils this spring on our patio. Simply stunning. Will definitely be ordering again

David P

Kent, UK

I ordered the mixed hyacinth collection and the scent in my garden this April was absolutely heavenly. Every single bulb produced a strong, beautiful flower and the colours were stunning together. A fantastic purchase, I'll be back for more next year!

Eleanor R

Somerset