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Species library › Cycas › Cycas cairnsiana
Other Well documented

Cycas cairnsiana

A striking, intensely blue-leaved cycad confined to the Newcastle Range in north Queensland. It grows in dry, rocky, open woodland on granite and is built for a hot wet summer and a long, warm dry season.

Cycas cairnsiana
Photo: 阿橋 HQ, CC BY-SA 2.0, 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

Dry, rocky, open eucalypt woodland on granite-derived soils, mostly on slopes and ridges.

Recorded at 300–700 m, median 400 m.

Queensland

🔒 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 2.0 licence, unmodified.