- Light
- Bright filtered light through the heat of the day; direct morning sun is welcomed. Avoid full afternoon exposure on the bare caudex during California summer peaks.
- Water
- Drink-and-dry through the warm months. The caudex tells you when it is thirsty: slight matte softening at the apex is the cue, not a calendar.
- Soil
- Pumice-dominant, with crushed lava and a thin organic fraction. Drainage is the entire game; a clogged pot kills this genus faster than cold does.
- Dormancy
- Drought rest from late autumn through early spring. A small handful of water once a month in winter keeps the finest roots alive without inviting rot.
- Hardiness
- USDA 10b–11 (50°F floor; tolerates dry cool nights but resents cold-wet feet at any temperature).
- Feeding
- Quarter-strength balanced fertilizer two or three times during the active season. Adenia caudexes thicken on water and time, not nitrogen.
- Repotting
- Three- to five-year cycle. Use the repot as an opportunity to lift the caudex another half-inch above the soil line and expose fresh, photogenic surface.