Plant allium bulbs from September to December. If needed, keep them in their open packets somewhere cool, dry and well ventilated until planting.
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With its reddish-purple and bluish-purple to deep pink umbels that stretch two inches across, this exotic Eastern European brings up immediate visions of night falling upon a wild landscape. Bees and butterflies love the taste of Allium atropurpureum, while animals don’t, so it’s an excellent addition to any garden, either in pots or the ground. It adores sunlight and prefers well-drained soil. To create the best effect, make sure to plant the tall and moody Allium atropurpureum in clusters. Their colours also fit in marvellously with perennials such as roses. You’d never think this prize winner was a humble onion, but it is!
Quantity
Plant profile
Plant calendar
Choose full sun or partial shade. Improve heavy soil with organic matter and horticultural grit. For containers, use peat-free multipurpose compost with good drainage.
Plant bulbs pointed side upwards, two to three times their own height deep. A slightly flattened side is perfectly normal and nothing to worry about.
Space small bulbs around 5cm apart. Larger bulbs need more room, generally around twice their own width apart, so their foliage and flowers can develop freely.
Water after planting if the soil is dry, then only when needed. After flowering, allow the foliage to die back naturally. Decorative seedheads can remain in place.
- Botanical name
- Allium atropurpureum
- Flower colour
- Purple, near-black
- Bulb size
- 10/+
- Established height
- 70cm-1m
- Established spread
- 20-30cm
- Growing skill
- Easy to grow
- Habit
- Upright
- Hardiness
- Fully hardy
- Leaf colour
- Green
- Mouse resistant
- Yes
- Plant spacing
- 50 bulbs per m2
- Pollinator friendly
- Yes
- Position
- Sheltered
- Rabbit resistant
- Yes
- Scented
- No
- Soil acidity
- Any
- Soil moisture
- Free draining
- Soil type
-
Loam
Sandy
Clay
Stony
Multipurpose compost - Suitable for
-
Large containers
Borders
Gravel gardens
Wildlife gardens
Cottage gardens
Low maintenance gardens
Cut flower gardens - Sunlight
- Full sun
- Toxicity
- Skin/eyes irritant
- Years to establish
- 1st year
Good for cutting
Pollinator-friendly
Thrives in full sun
Perennial
Fully hardy
Packed in paper
Low maintenance
Attracts wildlife
-30%
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Allium atropurpureum reviews
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