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Species library › Cycas › Cycas petraea
Other Well documented

Cycas petraea

A Near Threatened cycad of limestone cliffs in Loei Province, northeast Thailand, flanking the Phu Kradueng massif. It grows in seasonally dry tropical conditions: a hot, wet monsoon summer and a dry, cooler winter.

Cycas petraea
Photo: andy_king50, CC BY-SA 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

Grows on limestone mountains, rooted in crevices and pockets on rocky slopes and cliffs with scattered dry forest.

No elevation records; limestone hills around Phu Kradueng sit mostly at a few hundred metres.

ThailandLaos

🔒 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 3.0 licence, unmodified.