Grow your gardening skills as well as fabulous plants by starting your own Hibiscus moscheutos, commonly called rose mallows, from cuttings. The flowering shrubs, which grow in U.S. Department of Agriculture plant hardiness zones 5 through 10, flaunt big, tropical-looking white, red or pink blossoms in late summer on 6- to 10-foot stems that grow up from scratch each spring where winters are cold. Because it roots relatively quickly with a high success rate, rose mallow is a good plant to test your propagation skills on.
Water your rose mallow well the night before you plan to take cuttings. Rose mallow roots most easily from softwood cuttings taken in spring when shoots are green and snap easily when you bend them.
Spray the blades of your bypass pruners with household antiseptic cleaner to cut the chances of transferring diseases from a previously pruned plant to your new cutting or the rose mallow bush. Dry the pruners with a paper towel.
Cut the tips from several shoots that are about the same diameter as a pencil with the pruners. Cut 6 inches down from the tip of the shoot at a 45-degree angle, just below a leaf node.
Strip the leaves from the bottom of each cutting, leaving only two to three leaves at the top.
Fill clean 4-inch pots with a mix of 2 parts peat moss and 1 part perlite. Make a hole 2 inches deep in each pot with your fingertip or a pencil.
Dip the angled end of the cutting in rooting hormone powder.
Stick the cut ends into the holes without knocking off the rooting hormone. Firm the peat-perlite mix around the cuttings with your fingers.
Place two pencils, drinking straws or twigs into the soil to act as props, and place a clear plastic bag over the pot.
Move the pots to an area that has bright, indirect light. Keep the plants watered, misting occasionally until they show signs of new growth, in about one month.