Hoya arnottiana

Hoya arnottiana (Wight, 1834) is a robust, large-leaved climbing hoya of the eastern Himalayan foothills and northern Indochina, from Nepal and Bhutan through Assam and Bangladesh to Laos, Thailand and Vietnam. It is one of the more cold-tolerant hoyas and does best with a cool, drier winter rest.

At home, aim for

Day IntermediateTargets 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 restGrows on trees (epiphyte)

Where it grows wild

Epiphytic or scrambling climber in subtropical hill forest and forest edges, on trees and rocks in the moist monsoon belt of the Himalayan foothills and the limestone hills of northern Vietnam and Laos.

Measured sites at 600, 913 and 950 m; probably 300 to 1,500 m across the range.

NepalBhutanAssamBangladeshLaosThailandVietnam

🔒 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.