Lithops (Living Stones) Small, stone-like succulents with intriguing patterns and colors! Light: Bright, direct. Water: Sparingly, only when completely dry. Soil: Well-draining, gritty cactus mix. Temp: 65-80°F (18-27°C). Humidity: Low. Fertilizer: Rarely needed, diluted cactus fertilizer once a year. A fascinating and low-maintenance addition to any succulent collection!