Three-Cornered Leek

Allium triquetrum

Physical Characteristics

Allium triquetrum is a BULB growing to 0.4 m (1ft 4in). See above for USDA hardiness. It is hardy to UK zone 8 and is not frost tender. It is in leaf from February to July, in flower from April to June. 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 can grow in full shade (deep woodland) semi-shade (light woodland) or no shade. It prefers moist soil.

Distribution

S. Europe. Naturalized in Britain in S.W. England[17].

Habitats

Woodland Garden Dappled Shade; Shady Edge; not Deep Shade; Hedgerow;

Edible Uses

Edible Parts: Flowers Leaves Root Edible Uses: Bulb - raw or cooked. The rather small bulb is up to 20mm in diameter[200], it has a mild garlic flavour and can be used as a flavouring in salads and cooked foods. It is harvested in early summer when the plant has died down and will store for at least 6 months[K]. Leaves - raw or cooked. A leek substitute[22]. The leaves are available from late autumn until the spring, they are nice in salads when they are young, or cooked as a vegetable or flavouring as they get older[K]. The leaves have a milder and more delicate flavour than onions[183]. Flowers - raw. Juicy with a mild garlic flavour, they make a tasty and decorative garnish on salads[K].

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 very large quantities and by some mammals, of certain members of this genus. Dogs seem to be particularly susceptible[76].