Light: Bright light, but not direct sunlight. These grow in similar conditions to Haworthia succulents. White or yellow leaves usually signify too much sun. Water: Water evenly and generously in the summer, letting the soil media dry out between waterings. In the winter, reduce watering to every other month, but do not stop watering. Never allow water to collect in between the leaves. Temperature: Warmer summers but cool in the winter (down to 50˚F/10˚C). During warmer weather, your Gasteria leaves might turn a lighter, brighter color or the plant might flower with small, colorful sac-shaped flowers. Soil: Use a cactus mix or very fast-draining potting soil mixed with sand. Fertilizer: Fertilize during the summer growing season with a cactus fertilizer. Don’t feed during the winter.