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Species library › Psilocybe › Psilocybe caeruleoannulata
Fungi Little published: much of this is inferred from related species

Psilocybe caeruleoannulata

A psilocybin mushroom of marshy ground, grassland and pasture in southern Brazil and Uruguay, named for its bluish ring. It is the most common Psilocybe in the Floresta Nacional de São Francisco de Paula in Rio Grande do Sul. It contains psilocybin, which is a controlled substance in many countries; check local law before cultivating.

Psilocybe caeruleoannulata
Photo: This image was created by user wowitch at Mushroom Observer, a source for mycological images.You can contact this user here., CC BY-SA 3.0, via Wikimedia Commons
At home, aim for
Day IntermediateTargets 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

Grows on marshy ground, grasslands and pastures, probably on dung-enriched soil.

Few records carry an elevation; São Francisco de Paula is on a plateau at about 900 m.

Southern BrazilUruguay

🔒 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.