Species library · Plants & herbs

Foraging Three-cornered Leek

Allium triquetrum

Typically in season from March to November, peaking around April to October in the northern hemisphere. Found in Woodland edges, Grassland, Disturbed ground. Has toxic lookalikes, so check carefully.

Three-cornered Leek (Allium triquetrum)

Photo: (c) Lucas Carbone, some rights reserved (CC BY), uploaded by Lucas Carbone · iNaturalist

When Three-cornered Leek is in season

Typical window in the northern hemisphere, peak April to October. The southern hemisphere runs about six months offset, and your own timing depends on local weather, so check your town.

→ Everything in season to forage in September

Where it grows

Three-cornered Leek is usually found in Woodland edges, Grassland, Disturbed ground.

⚠ Look-alikes & safety

Deadly look-alikes: Lily of the valley, Summer snowflake, Snowdrop. Only forage with a confident ID.

Take Three-cornered Leek into the field

Open Three-cornered Leek in the Forage app for its full field guide entry with more photos, key features and toxic lookalikes to check against. Add it to your watchlist and the app pings you the moment it comes into season at your exact spot, worked out from live weather, elevation and billions of occurrence records.

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Three-cornered Leek: common questions

When is Three-cornered Leek in season?

Three-cornered Leek is generally in season from March to November, with its peak around April to October in temperate northern regions. The exact timing shifts with latitude, elevation and each year's weather. Check the Season Finder for your own location.

Where does Three-cornered Leek grow?

Three-cornered Leek is usually found in Woodland edges, Grassland, Disturbed ground.

Is Three-cornered Leek safe to forage?

Deadly look-alikes: Lily of the valley, Summer snowflake, Snowdrop. Only forage with a confident ID. Never eat any wild plant, berry, nut or mushroom unless you are completely certain of the identification. Check every find against a reliable field guide, and when in doubt, don't.

One note before you head out

Forage helps you discover and identify wild plants, but identification is never 100% certain. Many edible plants have toxic lookalikes. Never eat anything you find based only on what this app tells you. Always confirm with a field guide, an experienced forager or a local expert. The season score tells you where to look, too: it’s not a guarantee. Mind conservation law and property rights as well.

Species photos via Wikimedia Commons and iNaturalist · full credits