Allium tuberosum blue-flowered
Bulbous perennial about 60cm tall, with broad, grey-green basal leaves in clumps to 30cm. Numerous flowers in spherical umbels are variable in colour from rose-pink to mauve-blue and white and are borne in early or mid summer; suited to wet soils. The image shown is Allium nutans 'Caroline'
0.5-1 metres
0.1-0.5 metres
| Season | Stem | Flower | Foliage | Fruit |
|---|---|---|---|---|
| Spring | ||||
| Summer | ||||
| Autumn | ||||
| Winter |
Grow in moist but well-drained, reasonably fertile soil in full sun. Happy in moist soils, unlike most allium species. See allium cultivation for further advice
Propagate by seed when just ripe or in spring; or 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