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Species library › Cycas › Cycas collina
Other Partly documented

Cycas collina

A critically endangered cycad confined to the Mai Sơn area of Sơn La Province in northern Vietnam, where it grows on hills at about 950–1250 m.

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

Hill slopes in the karst and hill country of Sơn La, in semi-open forest and scrub. As with related northern Vietnamese Cycas, plants likely grow among rocks in thin soil with partial canopy cover; details for this species are not published in the sources reached.

Records lie at 950–1250 m.

Sơn LaVietnam

🔒 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.