Cleistocactus smaragdiflorus

A slender, clumping columnar cactus of the dry Andean foothills of northwest Argentina and southern Bolivia, known for its tubular red flowers tipped with emerald green. It wants full sun, a warm wet summer and a cool, almost rainless winter.

At home, aim for

Day Cool-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

Grows on rocky slopes and in open dry scrub and thorn forest of the Andean foothills, typically fully exposed or among low shrubs.

Recorded at 480–1395 m, median 1150 m; climate sites sit at 1000–1400 m.

CatamarcaTucumánSaltaJujuyTarijaChuquisaca

🔒 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.