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Species library › Cycas › Cycas tansachana
Other Partly documented

Cycas tansachana

A critically endangered cycad with a tiny range on the limestone hills of Saraburi in central Thailand. It lives with a hot, sharply seasonal monsoon climate and a hard dry season, and is grown much like other Thai limestone Cycas: bright light, sharp drainage and a dry winter.

Cycas tansachana
Photo: PeregrinusX, CC BY 3.0, via Wikimedia Commons
At home, aim for
Day Warm-growingTargets 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 on rock (lithophyte)

Where it grows wild

Limestone hills and cliffs in seasonally dry forest near Kaeng Khoi in Saraburi, including around a cave temple; growing among rocks with patchy tree cover.

Low elevation; the measured Saraburi site is near 30 m, the limestone outcrops themselves rise a few hundred metres.

Thailand

🔒 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 3.0 licence, unmodified.