Oncidium mexicanum

Oncidium mexicanum is the former Sigmatostalix mexicana, a tiny twig epiphyte from the mountains of Guerrero, Mexico, at about 1000–1900 m. Its home has a hot, bright dry season from November to May and a wet summer. Grow it small on a mount, bright and intermediate, with a 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

Sigmatostalix-type twig epiphyte; the Guerrero records fit seasonally dry oak and pine-oak forest of the Sierra Madre del Sur.

GBIF records lie at 991–1890 m, median 1000 m.

Mexico Southwest

🔒 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.