Calvatia arctica

Calvatia arctica is a small puffball of Arctic and alpine tundra, described from Greenland in 1910 and recorded from Iceland, Svalbard, Alaska and high ground in the Alps. It fruits in the short, cool, wet summer on open ground. It is not cultivated, and little is published on its ecology beyond its range.

At home, aim for

Day Cool-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Very humid airBand in Plantistry

Light Full sunDLI and PPFD in Plantistry

Expects a seasonal rest

Where it grows wild

Open Arctic and alpine tundra; like other tundra puffballs it is a soil saprotroph fruiting among mosses and low vegetation. Specific habitat notes were not available.

Recorded at 30–1366 m (median 152 m) in the Arctic; records in the Alps come from much higher alpine ground.

Arctic (Greenland, Iceland, Svalbard)Northern North AmericaEuropean AlpsNorthern Russia

🔒 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.