Gymnocalycium chacoense

A clustering Gymnocalycium with bright green stems, known from rock crevices and humus pockets on the granite inselberg Cerro San Miguel in Santa Cruz, Bolivia. It comes from a hot, seasonally dry tropical lowland region, so it wants warmth, partial shade and a gritty mix with some humus.

At home, aim for

Day IntermediateTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Dry airBand in Plantistry

Light Bright, filtered lightDLI and PPFD in Plantistry

Expects a seasonal restGrows on rock (lithophyte)

Where it grows wild

Rock crevices and humus-filled cavities on an inselberg surrounded by Chiquitano dry forest, often in partial shade of surrounding shrubs.

About 790 m on Cerro San Miguel; the measured climate site is lower at about 200 m.

BoliviaSanta Cruz

🔒 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.