Allium angulosum

Allium angulosum is an evergreen Bulb growing to 0.5 m .
It is hardy to zone 5 and is not frost tender. It is in leaf all year, in flower from July to August. The species is hermaphrodite and is pollinated by Bees, insects.
Suitable for: light , medium and heavy soils and prefers well-drained soil. Suitable pH: acid, neutral and basic soils. It can grow in semi-shade or no shade. It prefers moist soil.