Aeoniums and hybrid echeverias, two stalwarts of succulent landscapes and containers, are starting their growth period now, so it’s a good time to shape and propagate them. Both of these plants form dinner plate-size rosettes, some smooth and some ruffled. As they grow, many are pushed up by tall stalks that give an ungainly appearance. End this leggy look by slicing the rosette from the stem using a sharp knife. Leave about an inch of the stem attached. Set aside in a cool, dry place and allow the cut stem to “callus†for a week or more. By this time, new roots may begin to sprout. Plant the severed head in cactus mix. Keep the stem because it may sprout new rosettes along its length. These can be removed and planted as well.