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Species library › Cycas › Cycas hongheensis
Other Well documented

Cycas hongheensis

A small cycad confined to limestone cliffs in the dry, hot Red River valley of Honghe, southeastern Yunnan, China. It is critically endangered in the wild; grow it in full sun, a very free-draining limestone mix and a cool, dry winter.

At home, aim for
Day Cool-growingTargets in Plantistry
Night Close to the dayTargets in Plantistry
Humidity Dry airBand in Plantistry
Light Full sunDLI and PPFD in Plantistry
Expects a seasonal restGrows on rock (lithophyte)

Where it grows wild

It grows on steep limestone cliffs and rocky slopes in dry, open scrub in the Red River (Honghe) valley, often in full sun.

The measured sites are at about 1400–1700 m, adjusted from the climate grid.

ChinaYunnan

🔒 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.