Psilocybe allenii

Psilocybe allenii is a wood-loving mushroom of the Pacific coast of North America, from British Columbia to Los Angeles, that fruits from late September to January on wood-chip mulch. It grows easily on grain spawn and wood chips, and fruits in cool, wet winter weather after a dry summer. It contains psilocybin, which is a controlled substance in many countries; check local law before cultivating.

At home, aim for

Day Cool-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Very humid airBand in Plantistry

Light ShadeDLI and PPFD in Plantistry

Expects a seasonal rest

Where it grows wild

Grows on woody debris, especially landscaping wood chips of oak, eucalyptus, Douglas fir and alder, mostly within about 16 km of the Pacific coast.

Lowland coastal; recorded at 0–302 m.

Western North America

🔒 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

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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.