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Species library › Brighamia › Brighamia rockii
Succulents Well documented

Brighamia rockii

A critically endangered Hawaiian bellflower relative with a swollen succulent stem topped by a rosette of fleshy leaves, now almost confined to the north sea cliffs of Molokai. It wants warm, stable temperatures, bright light and sharp drainage, much like its better-known cousin Brighamia insignis.

Brighamia rockii
Photo: Forest & Kim Starr, CC BY 3.0, via Wikimedia Commons
At home, aim for
Day IntermediateTargets in Plantistry
Night Close to the dayTargets in Plantistry
Humidity Ordinary room humidityBand in Plantistry
Light Full sunDLI and PPFD in Plantistry
No rest periodGrows on rock (lithophyte)

Where it grows wild

Clings to steep, wind- and salt-spray-exposed basalt sea cliffs, rooting in crevices with little soil. Habitat notes draw on the genus and its known cliff sites.

Mostly from near sea level to a few hundred metres on coastal cliffs.

United States (Hawaii: Molokai)

🔒 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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More Brighamia

Brighamia insignis

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.