Kalanchoe jongmansii

A sprawling succulent subshrub from the high mountains of central Madagascar, chiefly the Andringitra Massif, at around 2,200 m. Unlike lowland Kalanchoe it wants cool nights and a cold, drier winter, with strong sun.

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 on rock (lithophyte)

Where it grows wild

Grows on rocky outcrops and granite slopes in high-montane scrub, rooting in thin soil in rock crevices.

Recorded at 1,350–2,658 m, median 2,229 m.

Madagascar

🔒 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 4.0 licence, unmodified.