Description Light/Soil/Water Hardiness Crassula Moonglow has thick fleshy gray-green leaves that form compact square rosettes stacked on top of each other like a tower as high as 18 inches. The plant needs a lot of support so that the stacked column will not fall over. Its leaves are covered with fine short hairs, giving it a chalky fuzzy look. Crassula Moonglow produces clusters of small pink-orange flowers in winter or spring. All of the plants may be shipped bare root. Full sun. Full shade is not recommended to prevent etiolation and rot. Porous and well-drained potting mix. Water thoroughly only when soil is dry to the touch, then let drain completely. Cold Tolerance: Down to at least 27 °F. USDA Zone from 10a: to -1.1 °C (30 °F) to 11: above 4.5 °C (40 °F)