succulents can be propagated by different means. the most common is vegetative propagation; this includes "cuttings" where several inches of stem with leaves are cut and after healing produce a callus. after a week or so, roots may grow. a second method is "division" consisting of uprooting an overgrown clump and pulling the stems and roots apart. a third method is propagation by leaf by allowing the formation of a callus. during this method, a bottom leaf is fully removed from the plant often by twisting or cutting. the leaf then dries out and a callus forms preventing the leaf from absorbing too much moisture and thus rotting. this method typically takes up to a few weeks to produce healthy roots that will eventually create new plants. the vegetative propagation can be different according to the species.