Gymnocalycium cabreraense

A flat, grey-green to blue-grey cactus up to 12 cm across, known from the rocky slopes of Cerro Cabrera in the northern Paraguayan Chaco at about 480 m. It grows with Gymnocalycium pflanzii, Cleistocactus and Bromelia in hot, summer-rain Chaco scrub, and it expects a dry, milder winter.

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

Rocky slopes of an isolated hill in Chaco dry forest and scrub, among bromeliads and other cacti that give partial shade.

About 480 m on Cerro Cabrera; the measured climate point is at 93 m, lower in the central Chaco.

ParaguayAlto Paraguay

🔒 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.