Giant Onion, Ornamental Onion

Allium giganteum

Physical Characteristics

Allium giganteum is a BULB growing to 2 m (6ft) by 0.2 m (0ft 8in) at a fast rate. See above for USDA hardiness. It is hardy to UK zone 8. It is in flower in May. 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 dry or moist soil.

Distribution

E. Asia - Afghanistan to Pakistan and north into Russia.

Habitats

Cultivated Beds;

Edible Uses

Edible Parts: Flowers Leaves Root Edible Uses: Bulb - raw or cooked[K]. We have seen no reports of edibility, but the bulb is certainly not poisonous and has a pleasant mild onion flavour[K]. The fairly large bulbs are 4 - 6cm in diameter[200]. Leaves - raw or cooked. Flowers - raw. Used as a garnish on salads.

Medicinal Uses

Although no 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 large quantities and by some mammals, of certain members of this genus. Dogs seem to be particularly susceptible[76].