Hoya calycina

A climbing hoya from New Guinea and the Bismarck Archipelago, valued by collectors for its fragrant flowers. Specimen labels place it in lowland and lower montane rain forest, including riverine forest and disturbed forest edges, from near sea level to about 1650 m. It wants warm, humid, bright-shaded conditions all year with a free-draining, airy mix.

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 periodClimber

Where it grows wild

Collection labels describe rain forest, riverine lower montane rain forest and disturbed forest near villages and plantations. Like most New Guinea hoyas it climbs into the canopy, where light is brighter than on the forest floor.

Labelled records run from about 100 m near Popondetta through 640–900 m around Lae and Bulolo to 1200–1650 m in the Morobe and Western Highlands foothills.

New GuineaBismarck Archipelago

🔒 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. Photo from Wikimedia Commons, used under its CC BY-SA 3.0 licence, unmodified.