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Species library › Dendrobium › Dendrobium williamsonii
Orchids Little published: much of this is inferred from related species

Dendrobium williamsonii

Williamson's dendrobium

An evergreen epiphytic dendrobium about 30–40 cm tall from monsoon hill forests of south China, north-east India, Myanmar, Thailand and Vietnam. Its dull yellow to cream flowers carry a red band across the lip and appear in spring, mostly April to June. Grow it as an intermediate to cool epiphyte with bright filtered light, a mild night drop and a drier, cooler winter.

Dendrobium williamsonii
Photo: Motohiro Sunouchi, CC BY 4.0, via Wikimedia Commons
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

Grows on tree trunks and branches in old montane forest, often on mountain slopes. Herbarium labels describe it as an evergreen epiphyte.

Herbarium specimens with elevations span about 610–2,740 m, with most between roughly 1,000 and 1,450 m (the Vietnamese collections are at 1,050–1,440 m).

China South-CentralChina SoutheastHainanAssamMyanmarThailandVietnam

🔒 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 4.0 licence, unmodified.