Cereus jamacaru

Mandacaru is a large, tree-like columnar cactus and an icon of the Brazilian caatinga. It is very drought-hardy and fast-growing. It wants heat, full sun and a long, dry season after a short rainy season.

At home, aim for

Day Warm-growingTargets 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 in the ground

Where it grows wild

It is common in the semi-arid caatinga of north-eastern Brazil, growing among thorn scrub and on rocky or sandy soils. One subspecies grows on limestone outcrops in Minas Gerais.

Records run from sea level to about 2,200 m, with a median of 450 m. Most plants grow in the lowland and low-plateau caatinga below 800 m.

Brazil NorthBrazil NortheastBrazil SoutheastBrazil West-Central

🔒 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 CC0 licence, unmodified.