Sedum are among the most forgiving of all plants: tough, drought-tolerant succulents with built-in survival mechanisms. Sedum will thrive in poor soil, making it the perfect candidate for rock gardens or steep slopes, or mixed in with annuals and perennials in traditional flower beds. Although sedum can be transplanted any time that the plants aren't in full bloom, the best time to transplant sedum is in early spring and autumn.
Prepare the planting area for the sedum ahead of time, so that the sedum can be transplanted quickly, and the roots won't have time to dry out. Choose a sunny spot where the soil drains well and rain doesn't puddle. Use a garden fork to loosen the soil to a depth of 10 to 12 inches. Add 2 to 3 inches of compost to the top of the soil, and work it into the soil.
Dig a large circle around the sedum plant using a shovel or a garden fork, then lift the sedum gently from the soil, along with a large clump of soil surrounding the roots.
Plant the sedum in the prepared planting spot. Dig a hole large enough to accommodate the sedum and the clump of soil, and plant the sedum carefully in the hole. Plant the sedum at the same soil depth it was planted in its previous home.
Water the sedum immediately after planting, and keep the soil moist until you see new growth, which indicates that the sedum has rooted in its new home. Don't water excessively, as sedum, like all succulents, is susceptible to rot. Once the roots are established, the sedum will need only an occasional watering during hot, dry weather.
Spread a 2-inch layer or organic mulch around the sedum plant, and replenish it every spring. Mulches such as bark or pine needles will keep weeds down and conserve moisture.