American onion
Allium unifolium

Common Name: American onion
Genus: Allium
Species: unifolium
Category: Bulbs, Corms, Tubers & Rhizomatous Plants
Growth Rate: Average
Features: Makes good cut flowers, Has interesting foliage, Suitable for growing in containers, Good for a rock garden
Hardiness: Half-Hardy | Height: 0.30 m (30 cm) |
Sun/Shade: Full sun | Spread: 0.05 m (5 cm) |
Foliage Type: Deciduous | Flower Colour: Purple, Pink |
Foliage Colour: Green | Flowering Period: May to July |
Soil Type: Normal/Loam or Sandy/Light or Chalky/Alkaline
Soil Moisture: Dry, well drained
The flowers on this Allium are quite papery which means they last longer than many of the other varieties. In spring the first sign of growth is the appearance of the strappy foliage. This has usually died off by the time the flowers appear in late spring. The pinky-purple bell shaped flowers emerge in clusters of up to 20 at a time on top of single stems. A great plant for an alpine bed or to add colour to the front of a mixed border.
- Garden care: Plant bulbs 5cm deep and 5cm apart in clumps or drifts. Avoid excessive soil moisture and split and divide large clumps in autumn or spring.
Similar Plants:

Ornamental onion
Allium 'Globemaster'

Star of Persia
Allium cristophii

Ornamental onion
Allium giganteum
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