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Species library › Agrocybe › Agrocybe arvalis
Fungi Partly documented

Agrocybe arvalis

Tuberous fieldcap

A small brown fieldcap that rises on a long, rooting stem from a dark sclerotium buried in garden beds, woodchips and rich soil. It is widespread in Europe and North America; edibility is unknown.

Agrocybe arvalis
Photo: This image was created by user walt sturgeon (Mycowalt) 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 Cool-growingTargets in Plantistry
Night Close to the dayTargets in Plantistry
Humidity Very humid airBand in Plantistry
Light Dappled lightDLI and PPFD in Plantistry
No rest period

Where it grows wild

Garden beds, woodchip mulch, compost-rich soil and field margins.

Recorded from sea level to about 2,350 m, median around 420 m.

EuropeNorth 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.