Coprinus nycthemerus

A tiny, short-lived inky cap named by Elias Fries; the epithet means lasting a night and a day. GBIF has six records from western Europe and Pennsylvania, but modern concepts of the name vary.

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

No rest period

Where it grows wild

Small ephemeral inky caps of this type grow on dung, manured soil or rotting plant debris; the reachable sources do not state its substrate.

Records span about 100 to 1170 m.

Spain (Catalonia)NetherlandsGermanySwitzerlandUnited States (Pennsylvania)

🔒 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.