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Species library › Dioon › Dioon merolae
Other Well documented

Dioon merolae

A slow-growing cycad from steep rocky slopes in Chiapas and Oaxaca, Mexico, with long, stiff fronds of narrow leaflets. It is among the more cold-tolerant Dioon in cultivation, and in the wild it sits through a long dry season from November to April.

Dioon merolae
Photo: Stickpen, Public domain, via Wikimedia Commons
At home, aim for
Day IntermediateTargets in Plantistry
Night Close to the dayTargets in Plantistry
Humidity Dry airBand in Plantistry
Light Bright, filtered lightDLI and PPFD in Plantistry
Expects a seasonal restGrows in the ground

Where it grows wild

Steep, rocky slopes and cliffs in tropical deciduous forest and oak or pine-oak woodland, often on limestone or other rocky ground, growing in open to partly shaded spots.

Recorded at about 500–1,460 m, median about 600 m.

ChiapasOaxacaMexico

🔒 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.