Prairie Onion, Autumn onion

Allium stellatum

Physical Characteristics

Allium stellatum is a BULB growing to 0.8 m (2ft 7in) at a medium rate. See above for USDA hardiness. It is hardy to UK zone 6 and is not frost tender. It is in flower in July. The species is hermaphrodite (has both male and female organs) and is pollinated by Bees, insects. Suitable for: light (sandy) and medium (loamy) soils and prefers well-drained soil. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It cannot grow in the shade. It prefers moist soil.

Distribution

N. America - Illinois and Minnesota to Missouri, Nebraska and Kansas.

Habitats

Cultivated Beds;

Edible Uses

Edible Parts: Flowers Leaves Root Edible Uses: Bulb - raw or cooked[2]. The bulbs are eaten by the N. American Indians[183]. They are rather small, about 4cm tall and 15mm wide[235]. Leaves - raw or cooked. Flowers - raw. Used as a garnish on salads.

Medicinal Uses

A sweetened decoction of the root has been taken, mainly by children, as a remedy for colds[257]. Although no other specific mention of medicinal uses has been seen for this species, members of this genus are in general very healthy additions to the diet. They contain sulphur compounds (which give them their onion flavour) and when added to the diet on a regular basis they help reduce blood cholesterol levels, act as a tonic to the digestive system and also tonify the circulatory system[K].

Known Hazards

Although no individual reports regarding this species have been seen, there have been cases of poisoning caused by the consumption, in very large quantities and by some mammals, of certain members of this genus. Dogs seem to be particularly susceptible[76].