Species library › Crassula › Crassula ruamahanga
Succulents Well documented

Crassula ruamahanga

A tiny, mat-forming Crassula endemic to New Zealand, named after the Ruamahanga River in the Wairarapa. It is a plant of damp, open lowland ground such as turf, wetland margins and seasonally wet hollows, so it behaves more like a small bog herb than a drought-tolerant succulent.

Crassula ruamahanga
Photo: Ewen Cameron, CC BY 4.0, via Wikimedia Commons
At home, aim for
Day Cool-growingTargets in Plantistry
Night Close to the dayTargets in Plantistry
Humidity Humid airBand in Plantistry
Light Full sunDLI and PPFD in Plantistry
No rest periodGrows in the ground

Where it grows wild

Grows in open, damp to seasonally wet lowland sites: turf and short grassland by rivers and lakes, ephemeral wetland margins and wet hollows, where taller plants are kept down by flooding or grazing.

Lowland: recorded from 2 to 60 m, median 10 m.

New Zealand NorthNew Zealand South

🔒 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 4.0 licence, unmodified.