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Species library › Dioon › Dioon rzedowskii
Other Partly documented

Dioon rzedowskii

An endangered Mexican cycad known only from the Río Santo Domingo valley in northern Oaxaca, with long leaves and large trunks. It wants warmth, strong but not scorching light, a very well-drained limestone-friendly mix, and a wet summer followed by a dry winter.

Dioon rzedowskii
Photo: C T Johansson, 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

Probably steep slopes and cliffs in tropical deciduous and semi-deciduous forest of the Río Santo Domingo canyon, as is typical for Dioon of the region. Plants on cliffs often have long, hanging leaves.

Recorded at 430 to 2073 m, median 650 m; the core population sits at roughly 500 to 700 m in the canyon.

Oaxaca

🔒 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.