Sedum is best propagated by stem or leaf cuttings, although it can also be propagated by root division or grown from seeds. The best time to take cuttings of sedum is in spring so the newly-rooted cuttings have a couple of months of frost-free weather to become established after planting in the garden.
Fill the shallow, flat container with vermiculite.
Water until the vermiculite is thoroughly moistened but not soggy.
Take cuttings. Cut the tips of branches just below the third set of leaves. Remove the bottom set of leaves.
Dip the cut end of the cuttings into rooting hormone. Blow off the excess.
Insert the eraser end of a pencil into the vermiculite to make a hole in which to insert the cuttings.
Insert the sedum cuttings into the prepared holes in the vermiculite. Make sure the nodes from the removed leaves are below the surface of the vermiculite. Roots will grow from these nodes. Firm the medium around the stem so that the cuttings stand up by themselves. It's okay to crowd them in the container because they will be transplanted after roots form.
Put the container of cuttings in the shade. Check daily and water as needed to keep the vermiculite moist.
Check to see if roots have formed after 3 to 4 weeks. Gently tug on the cuttings. If you feel a slight resistance when you pull on the cutting using gentle pressure, roots have begun to form. Let the roots continue to grow for another 2 to 3 weeks before planting into individual pots or into the garden.