Begonia cavaleriei

Changgan begonia

A rhizomatous begonia from the limestone karst of southern China (Guizhou, Guangxi, SE Yunnan), with a population in northern Vietnam. It grows on moist, shaded limestone rock and soil in forest. It is listed as Vulnerable. Give it shade, a free-draining mineral-rich mix and a cooler, drier winter.

At home, aim for

Day IntermediateTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Ordinary room humidityBand in Plantistry

Light ShadeDLI and PPFD in Plantistry

Expects a seasonal restGrows on rock (lithophyte)

Where it grows wild

On moist limestone rocks and rocky soil under forest in karst hills and gorges, often in the humid, shaded bases of cliffs and slopes.

Herbarium records mostly 250–600 m (Guangxi, Maolan in Guizhou, northern Vietnam). Observations around Guiyang and Anshun suggest it also reaches roughly 1,000–1,300 m on the Guizhou plateau.

China (Guizhou, Guangxi, Yunnan)Vietnam (north)

🔒 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.