Psilocybe subborealis

Psilocybe subborealis is a small North American mushroom described by Guzmán and A.H. Smith in 1978, known from a handful of collections in Michigan and Idaho. Almost nothing is published about its ecology, so conditions here are inferred from the cool-temperate northern US and the genus. Many Psilocybe species contain psilocybin, 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

Habitat not recorded in available sources; the name suggests affinity with P. borealis, a northern species of woody debris in conifer forest, but this is unconfirmed.

Not recorded.

United States (Michigan, Idaho)

🔒 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.