Begonia rhoephila

stream begonia

A small rheophytic begonia endemic to Selangor in Peninsular Malaysia, where it grows on wet rocks and boulders in forest streams just above normal water level. It is adapted to constant spray, saturated air and occasional flooding. In cultivation it is a warm, very humid terrarium plant that wants a wet but airy rock or root zone.

At home, aim for

Day Warm-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Very humid airBand in Plantistry

Light ShadeDLI and PPFD in Plantistry

No rest periodGrows on rock (lithophyte)

Where it grows wild

It grows in or beside rocky streams in the foothills of the Titiwangsa Mountains, about 15 mm above normal water level, and further downstream on boulders. Herbarium labels simply record wet rocks. The stream corridor gives it shaded to dappled light and near-saturated air.

The one GBIF record with an elevation is at 610 m; its foothill streams are probably mostly in the 200–800 m range.

Peninsular Malaysia: Selangor

🔒 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.