Hoya ischnopus

Hoya ischnopus is a small-flowered vine described by Schlechter in 1913 from New Guinea and also recorded from Sulawesi. Wild records span the hot lowlands around Sorong and the Papua New Guinea coast up to about 1,650 m in the Owen Stanley Range, so it is more adaptable than most, thriving in warm, humid, ever-wet conditions with a modest night drop.

At home, aim for

Day Warm-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Ordinary room humidityBand in Plantistry

Light Dappled lightDLI and PPFD in Plantistry

No rest periodGrows on trees (epiphyte)

Where it grows wild

An epiphytic vine of humid lowland and hill rainforest, climbing trunks and branches under a broken canopy, with populations reaching lower montane forest.

Records sit from about 10 m to 1,650 m; the averaged climate blends a sea-level site, two hill sites and one montane site, so lowland plants run warmer and the highest ones several degrees cooler.

Papua New GuineaNew GuineaSulawesiIndonesia

🔒 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.