Known for its beautiful display of large, showy, colorful flowers on a backdrop of lush, green leaves on tall treelike stems, the Rose of Sharon is an impressive plant. Compared to its more tropical relative, the hibiscus, Rose of Sharon grows well in most of the United States, from hardiness zones 5B through 9A. It requires little to no care and is easily propagated by starting clippings from a mature plant.
Mix equal amounts of peat moss and coarse sand or perlite for rooting medium. Fill planting flats with the mix and water them so that the soil is moist but not wet.
Take cuttings around 4 to 6 inches in length from softwood stems with at least three pairs of smaller leaves and buds on a healthy Rose of Sharon plant.
Remove the leaves from the bottom third of each cutting with a sharp knife and dust the cut end with rooting hormone. Tap the end of the cutting to remove any excess powder.
Insert each cutting 1/3 to 1/2 its length into the rooting medium. Water the cuttings and cover them with a large plastic bag to maintain humidity. Place the cuttings in a warm, sunny area, watering regularly, keeping the soil damp, but not wet.
The Rose of Sharon cuttings will root after a few weeks. Transplant the cuttings, once the roots are well developed, to 1-gallon pots to be grown out. Once they mature, transplant them to the landscape.