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Allium triquetrum
Also called Triquetrous garlic, Three Cornered Garlic, Angled Onion, Three Cornered Leek, Triquetrous Leek, Onion Weed, Three Corner Garlic
Threecorner leek is a bulbous Mediterranean plant with white flowers and onion-scented leaves, grown in gardens but often treated as a weed where it spreads. It is best kept in check by removing bulbs and bulblets, since it readily naturalises.
Allium triquetrum is a bulbous flowering plant in the genus Allium native to the Mediterranean basin. It is known in English as three-cornered leek or three-cornered garlic, in Australia as angled onion, and in New Zealand as onion weed. Both the English name and the specific epithet triquetrum refer to the three-cornered shape of the flower stalks.
Allium triquetrum is native to southwestern Europe, northwestern Africa, Madeira, and the Canary Islands, where it grows in meadows, woodland clearings, on river banks, and roadside verges from sea level to an elevation of 850 metres (2,790 ft). It has also been introduced to Great Britain, Ireland, Azores, New Zealand, Turkey, Australia, California, Oregon, and South America, and is a declared noxious weed in some of those places. It has been recorded as an alien at a garden waste site on Howth Head, Ireland.
All parts of the plant, from the bulb to the flowers, are edible fresh or cooked. It can be used in dishes similarly to spring onions and wild onions, as it is similar both morphologically and in taste.
South Idaho onion · Abrams' allium · Allium aciphyllum · Tapertip onion · Allium aeginiense · Allium aflatunense · Allium agrigentinum · Allium alabasicum · Allium albotunicatum · Allium alibile · Altai Onion · Allium altissimum
Text excerpted from the Wikipedia article Allium triquetrum by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
