Psilocybe ovoideocystidiata

A wood-loving psilocybin mushroom of eastern North America, recorded since 2003, that fruits mainly in spring after several days of heavy rain. It grows in large troops on woody debris in river overflow areas and on urban wood-chip mulch, and its range appears to be expanding. It contains 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

Gregarious on woody debris along rivers and streams, usually in flood-overflow areas, and on wood chips and mulch in towns; often near Japanese knotweed, in shade.

Recorded at 0–434 m, median 75 m (19 records); a lowland river-valley species.

Eastern North AmericaWestern 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.