Begonia atricha

Begonia atricha is a begonia from Sumatra and Java, named by Miquel in the 1860s. It grows in tall, wet rainforest understorey and on rocks by rivers at about 290–1,030 m. Its climate is uniformly warm and wet, with no dry season, so it wants steady warmth, shade and constant moisture.

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 in the ground

Where it grows wild

Specimens were collected on rocks at Kayutanam and in the understorey of tall forest by a river at the foot of Gunung Sago in West Sumatra, as well as at Bukit Sebelah. The Edinburgh botanic garden holds living collections from 2016.

It has been recorded from 286 to 1,026 m, with a median of 400 m. One measured site sits lower, at about 96 m.

SumateraJawa

🔒 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.