Hoya fusca

Hoya fusca, described by Wallich in 1830, is a small-leaved montane hoya of the Himalayan foothills, southern China and mainland Southeast Asia, with well over a hundred wild records clustering around 2,000 m. It is one of the most cold-tolerant hoyas, sitting through cool, dry winters with nights near 5 C, and it wants that seasonal rhythm at home.

At home, aim for

Day Cool-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Ordinary room humidityBand in Plantistry

Light Bright, filtered lightDLI and PPFD in Plantistry

Expects a seasonal restGrows on trees (epiphyte)

Where it grows wild

An epiphytic or scrambling climber of open montane forest, forest margins and rocky slopes, in bright filtered light rather than deep shade, with a pronounced cool dry season.

Recorded elevations run 197 to 2,600 m with a median of 2,181 m from 21 records; the climate sites lie at 1,200 to 2,170 m in Yunnan and adjacent Tibet.

YunnanSouthern ChinaNepalNortheast IndiaBhutanMyanmarThailandLaosVietnamCambodiaBangladesh

🔒 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.