Cleistocactus ritteri

A branching, upright Bolivian cactus with slender stems wrapped in white hair and tubular yellow flowers. It comes from the moist Andean Yungas of La Paz, where it grows under trees and shrubs at high elevation, so it wants cooler, more humid conditions and more shade than desert cacti.

At home, aim for

Day Cool-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Ordinary room humidityBand in Plantistry

Light Bright, filtered lightDLI and PPFD in Plantistry

Expects a seasonal restGrows in the ground

Where it grows wild

Grows in loamy soil beneath trees and shrubs on mountain slopes in the Yungas of La Paz department.

The literature gives 2,700–3,000 m; the climate grid cell sits at about 2,730 m, but the recorded site elevation of 1,120 m was used for temperature adjustment.

Bolivia (La Paz)

🔒 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.