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Species library › Hoya › Hoya macgillivrayi
Hoyas Well documented

Hoya macgillivrayi

Red hoya

A vigorous climbing Hoya found only on Cape York Peninsula in far north Queensland. It is prized for its umbels of large, glossy, dark red to reddish-pink flowers, 5–7 cm across. It grows in lowland rainforest, gallery forest and semi-deciduous vine thicket around the Iron and McIlwraith Ranges. Because it comes from a monsoon climate, it handles warmth and a drier winter well, and it flowers from May to October.

At home, aim for
Day Warm-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 restClimber

Where it grows wild

It is an epiphytic and climbing vine in rainforest, tall gallery forest along creeks, coastal evergreen notophyll vine forest and semi-deciduous or deciduous vine thicket on granite and basic igneous soils. It scrambles up trees towards brighter light. A few labels note it in dry scrub on rocky ground near Rocky River.

Wild records come from 5–450 m, median about 120 m. The 760–780 m records at Atherton are labelled as cultivated. Published accounts give sea level to about 450 m.

Australia: Queensland, Cape York Peninsula (Iron Range, Tozer Range, McIlwraith Range, Lockhart River, Claudie and Rocky Rivers)

🔒 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.