Psilocybe squalens

An old name from Elias Fries (as Agaricus squalens), moved to Psilocybe by Saccardo. GBIF holds only 19th-century Swedish specimens from Uppsala and Stockholm and one from Natal, so its modern identity is unclear. Whether it contains psilocybin is not documented; if it does, it is controlled in many countries, so 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 Dappled lightDLI and PPFD in Plantistry

Expects a seasonal rest

Where it grows wild

Undocumented. The Uppsala specimens were collected in September, suggesting autumn fruiting in southern Swedish woods, gardens or grassland.

Lowland (Uppsala and Stockholm).

Sweden

🔒 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.