Hoya merrillii

Hoya merrillii Schltr. (1904) is a Philippine lowland epiphyte, widely grown for its glossy leaves that flush red in strong light and its yellow-white, scented umbels. Wild records come from Mindoro, Panay and Samar at sea level to about 100 m, in a hot, humid climate with no real dry season. Give it bright light, steady warmth and humidity, and a fast-draining mix.

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

No rest periodGrows on trees (epiphyte)

Where it grows wild

Epiphytic climber on trunks and branches in lowland and coastal forest, often in fairly open, bright positions; it is a robust, sun-tolerant species in cultivation.

The four records lie between 4 and 96 m; it is a lowland plant.

PhilippinesMindoroPanaySamar

🔒 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 2.0 licence, unmodified.