Species library › Psilocybe › Psilocybe semilanceata
Fungi Partly documented

Psilocybe semilanceata

Liberty cap

A small, sharply pointed brown mushroom of wet, grazed or mown grassland across temperate Europe and other cool, humid regions. It lives on decaying grass roots rather than on dung, fruits in autumn and early winter, and has never been reliably fruited indoors. Psilocybin is a controlled substance in most countries, and growing this mushroom is illegal in many places; check local law before cultivating.

Psilocybe semilanceata
Photo: Alan Rockefeller, CC BY-SA 3.0, via Wikimedia Commons
At home, aim for
Day Cool-growingTargets in Plantistry
Night Close to the dayTargets in Plantistry
Humidity Very humid airBand in Plantistry
Light Full sunDLI and PPFD in Plantistry
No rest period

Where it grows wild

A saprotroph on decaying grass roots in damp pastures, meadows, lawns and parkland, often where sheep or cattle graze but not directly on dung. It fruits in open grass in autumn after cool rain.

Mostly lowland; the 65 records with an elevation span 0–2420 m (median 180 m). It also grows in upland grassland.

Northern and western EuropePacific Northwest of North AmericaChileAustraliaNew Zealand

🔒 Growing it like that

The wild conditions above, turned into targets for a shelf, a tent or a greenhouse. The full profile has:

✓ Day and night temperature targets, and the limits it tolerates
✓ Humidity band, and how to hold it
✓ Light as DLI and PPFD for a grow light
✓ Wet and dry seasons, and whether to rest it
✓ Substrate and airflow
✓ A step-by-step setup to grow it like the wild

Grow Psilocybe semilanceata? Add it to a free garden and its full profile opens. Pro opens all 38,374 profiles in the library, plants and fungi.

Profiles are drafts built from measured range and climate and from published sources; each section carries its own confidence in the app. Photo from Wikimedia Commons, used under its CC BY-SA 3.0 licence, unmodified.