Like many woody plants, rose of Sharon is easily propagated by rooting a small cutting. This method is popular for good reason. It is quick, inexpensive and doesn't require any specialized equipment or knowledge. Rooting a rose of Sharon allows you to clone an existing plant, something that doesn't always happen when planting seeds. It also lets you easily take a part of a favorite plant with you or share your beautiful rose of Sharon with family and friends.
Mix together equal amounts of perlite and peat moss.
Fill the pot with the perlite and peat moss mixture.
Cut a 6-inch section of strong, healthy stem from near the top of an existing rose of Sharon plant. Make the cut at a 45-degree angle.
Remove any flowers or flower buds from the cutting by gently pinching them off, and remove the leaves from the bottom 4 inches of the cutting.
Wound the cutting near the bottom by nicking it on one side with a sharp knife. This will help roots to form.
Coat the bottom of the cutting, including the wound, in rooting powder.
Push the cutting gently into the soil in the pot you prepared earlier, making sure at least 2 to 3 inches of the stem are below the soil.
Water the cutting.
Cover the cutting and pot with a sheet of clear plastic wrap, securing it around the pot with a rubber band or large twist tie. Seal any edges with another sheet of plastic wrap if necessary to make it airtight to hold in moisture.
Place the cutting in a location that receives indirect sunlight.
Wait three to four weeks, watering as needed to prevent the soil from drying.
Remove the plastic wrap and allow your new rose of Sharon plant to grow another week or two before beginning to harden it for outdoor planting.