Arthrocereus rondonianus

A slender, golden-spined cactus from the quartzite rock outcrops (campo rupestre) of Minas Gerais, Brazil, with large magenta flowers. It wants strong light, a pronounced dry winter and a very gritty, acidic mineral mix.

At home, aim for

Day IntermediateTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Dry airBand in Plantistry

Light Full sunDLI and PPFD in Plantistry

Expects a seasonal restGrows on rock (lithophyte)

Where it grows wild

Grows among rocks and in crevices on quartzite and sandstone outcrops in campo rupestre vegetation, often in shallow sandy pockets. Generalised from the genus and region.

Recorded at about 450–1,150 m, median around 900 m.

Brazil Southeast

🔒 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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More Arthrocereus

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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 2.5 licence, unmodified.