Hoya collina

Hoya collina is a New Guinea hoya described by Schlechter in 1913 and hardly seen since; its two wild records are from the lowlands of Indonesian Papua. It wants the steady heat, high humidity and year-round rain of lowland to foothill rainforest, with no rest period.

At home, aim for

Day Warm-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Humid airBand in Plantistry

Light Dappled lightDLI and PPFD in Plantistry

No rest periodGrows on trees (epiphyte)

Where it grows wild

The name means of the hills, and Schlechter's New Guinea hoyas were mostly epiphytes of hill forest at a few hundred metres. The two records sit at 50 and 99 m in wet lowland forest near the north coast of Papua.

Records at 50 to 100 m; probably extends into foothill forest to a few hundred metres.

Indonesia (Papua)New Guinea

🔒 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.