Hoya griffithii

A vigorous epiphytic climber from subtropical monsoon forests of north-east India (Khasi Hills), Myanmar, southern China, Laos and Vietnam, with stems about 1.5 m long. It carries large, fragrant flowers in umbels and is considered one of the easier large-flowered hoyas to grow. It likes a warm, wet summer and a cooler, drier winter.

At home, aim for

Day IntermediateTargets 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

It climbs and scrambles through subtropical forest as an epiphyte, and Chinese records note it along river margins and on north-facing mountain slopes. It grows in dappled light under the canopy or at forest edges.

Around 800 m is typical. Labelled records run from about 365 m (Guangdong) to about 1500 m (Yunnan).

AssamMyanmarChinaLaosVietnam

🔒 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 Public domain licence, unmodified.