BLOOM TIME: Spring - All Summer HARDINESS ZONE: 3 - 8 PLANT HEIGHT: 2 - 3&#34; . . . PLANT SPACING: 9 - 12&#34; LIGHT REQUIREMENTS: Sun - Part Shade . . . SOIL / WATER: Average - Dry Sedum is an excellent choice for borders, rock gardens, or as a groundcover. They are a succulent, and tolerate dryness and heat. Sedum is not picky about the soil it will grow in and will tolerate just about any soil or sand.