Dudleya pulverulenta

Chalk dudleya is a large, chalky-white rosette succulent of coastal cliffs and canyons from southern California to central Baja California. It grows in winter and goes dormant through the hot, rainless summer, when exposed rosettes fold their leaves inward; summer water in warm weather rots it quickly.

At home, aim for

Day Cool-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Dry airBand in Plantistry

Light Full sunDLI and PPFD in Plantistry

Expects a seasonal restGrows on rock (lithophyte)

Where it grows wild

Rocky cliffs, canyon walls and steep slopes in coastal sage scrub and chaparral, in shallow rocky soil; plants often lean out from vertical rock faces, which keeps water off the rosette.

Recorded at 5–1,700 m, median 326 m; mostly below 1,000 m and within about 20 km of the coast.

CaliforniaBaja California

🔒 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.