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Species library › Dioon › Dioon holmgrenii
Other Well documented

Dioon holmgrenii

An endangered Oaxacan cycad known from two subpopulations near San Gabriel Mixtepec, growing in humid pine-oak forest on the Pacific slope. It gets a strongly seasonal climate: a long dry winter and a wet summer, with warm temperatures all year.

Dioon holmgrenii
Photo: Krzysztof Ziarnek, Kenraiz, CC BY-SA 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 Bright, filtered lightDLI and PPFD in Plantistry
Expects a seasonal restGrows in the ground

Where it grows wild

Humid pine-oak forest on the Pacific slope of Oaxaca, in bright conditions; locally called 'palma del sol'.

GBIF records span 30–2720 m (median 736 m), but the true range around San Gabriel Mixtepec is likely mid-elevation.

OaxacaMexico

🔒 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-SA 4.0 licence, unmodified.