Oncidium nigratum

Oncidium nigratum grows on the tepuis and Guiana Highlands of Venezuela, Guyana and northern Brazil, mostly at 1300–2150 m. It carries long branched sprays of small, dark-barred flowers and wants intermediate temperatures, bright light and a drier spell from January to March.

At home, aim for

Day IntermediateTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Humid airBand in Plantistry

Light Bright, filtered lightDLI and PPFD in Plantistry

Expects a seasonal restGrows on trees (epiphyte)

Where it grows wild

Epiphyte of montane forest and scrub on the Guiana Highlands and tepui slopes.

Recorded at 1298–2150 m (median 1750 m); two lowland sites in the measured set are probably mislocated or collection-town records.

VenezuelaBrazil NorthGuyanaColombia

🔒 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.