Hoya mcgregorii

Hoya mcgregorii is an old Philippine species, described by Schlechter in 1906 from collections made by R. C. McGregor of the Bureau of Science, and rarely seen in cultivation. Its early collections point to humid forest on Luzon, so it should be grown warm and humid with filtered light and a slight easing of water in the drier first months of the year.

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

Expects a seasonal restGrows on trees (epiphyte)

Where it grows wild

Assumed, as for most Philippine hoyas, to be an epiphytic vine on trunks and branches of humid evergreen forest, from the lowlands into the hills.

No elevation is recorded; the placeholder climate site sits at 9 m. Early Philippine collections of this kind mostly came from lowland and hill forest below about 1,000 m.

PhilippinesLuzon

🔒 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.