The Graptosedum stores water in its leaves and stem. California Sunset can survive without water for over a week. Take great care when watering it. Its roots rot if they stay submerged in a moist place for an extended period.
Feed every two to three weeks during spring and summer using a diluted solution of water-soluble fertilizer or a product formulated specifically for cactus and succulents.
An ideal soil would be made up of 45% minerals (sand, clay, silt), 5 % organic (plant and animal) material, 25% air and 25% water. The mineral portion would be loam (20 – 30% clay, 30 – 50% silt and 30 – 50% sand).
These plants prefer a temperature range of 55-65°F at night and 70-80°F during the day. They like well-draining soil that's fairly rich in organic matter. If you're transplanting into containers, place some drainage material such as gravel in the bottom of the pot.