Cleistocactus glaucus

A grey-green columnar cactus from the dry inter-Andean valleys of La Paz, Bolivia, at roughly 2,400–2,600 m. It needs full sun, mild days, cool nights and a dry winter.

At home, aim for

Day Cool-growingTargets in Plantistry

Night A clear drop at nightTargets 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 in seasonally dry tropical scrub on rocky valley slopes, forming clumps of stems 1–2 m tall.

Recorded sites lie at about 2,400–2,600 m.

La PazBolivia

🔒 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.