RHS 
Bulbous perennial, up to about 75cm high, with linear green leaves which start to die down when the dense, spherical umbels, about 25-30cm across, of purplish-pink flowers appear in summer
0.5-1 metres
0.1-0.5 metres
| Season | Stem | Flower | Foliage | Fruit |
|---|---|---|---|---|
| Spring | ||||
| Summer | ||||
| Autumn | ||||
| Winter |
Grow in full sun and fertile well-drained soil. It is best to grow in containers where garden soil is heavy clay and prone to saturation over winter. See allium cultivation
Propagate by offsets which can be carefully detached by lifting the bulb after flowering has finished. See bulb propagation
No pruning required, other than to remove old flowered stems and foliage
May be susceptible to allium leaf miner and onion fly
May be susceptible to onion white rot, and onion downy mildew