Sedum forms the perfect mix of hardy perennial and sturdy flowering plant that lasts well into the cooler months of the year. Without snow cover, this plant will retain its leaf color and some flowering during the winter. Sedum can handle dry climates as well as rocky, poorly-drained soil. Sedum enjoys full sun exposure and function well in those difficult areas of the landscape where other plants just won't grow. This tough plant requires little care throughout the year. However, learning how to winterize sedum will keep the plant healthy when it rejuvenates during the growing season each year.
Evaluate the condition of your sedum plant during the summer months. Transplant any necessary plants to thin and spread out this groundcover. Sedum can become quite crowded with self-seeding.
Clip back flowers and foliage in the late fall with pruning clippers. Remove growth by about 6 inches to control the size of the plant.
Protect the plant with an even layer of mulch to a depth of about 4 inches. While this hardy plant doesn't require mulch, it will help maintain an even soil temperature and moisture level.