Oncidium wentworthianum

An epiphytic Oncidium with branched sprays of yellow and brown flowers, found from Mexico through Guatemala to El Salvador. It grows in seasonally dry forest from near sea level to about 2,000 m, with a marked dry season from February to April. Grow it bright and intermediate, with a drier rest after the new growths mature.

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

An epiphyte in seasonally dry to moist forest, including oak and pine–oak woodland at mid-elevations.

Recorded elevations are 41–2,009 m, with a median of 778 m.

MexicoGuatemalaEl Salvador

🔒 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.