Some plants are considered garden workhorses: they require minimal maintenance; bloom for weeks; thrive under imperfect conditions; and have few diseases or insect pests. Sedums fall into this category. Sedum is a genus of about 400-500 species of annuals and succulent herbaceous perennials native to Europe, Siberia and western Asia, North Africa, and North America. In the United States, Sedum can be grown in USDA Hardiness Zones 3-9. The Missouri Botanical Garden Plant Finder contains over 50 sedum entries. About 30 species of sedum now are classified under the genus Hylotelephium. This means Sedum may be listed as Hylotelephium, Telephium, stonecrop, autumn stonecrop, or autumn Sedum, making plant shopping a little bit more challenging! In this column, I’m referring to all genera as sedum. Sedums are low-maintenance plants. They prefer average, well-drained, sandy or clayey soil with a neutral pH of 7.0. Add a layer of compost and 2 inches of mulch in the spring. Sedums are heat and ...