Agaricus castaneus

Agaricus castaneus is an old name by William Withering, from when Agaricus covered almost every gilled mushroom; the epithet means chestnut-coloured. GBIF holds four records from north-east England, but the name's modern identity is unclear, so conditions here come from the measured local climate and general Agaricus practice.

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

Not documented; assumed to fruit on soil or among litter in grass or woodland edges, as most Agaricus do.

Records are lowland, around 60–100 m near Newcastle upon Tyne.

Great Britain

🔒 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.