The rose of Sharon is admired for its prolific summer display of large, showy, colorful flowers, strewn across a canopy of green, serrated leaves on this tall, tree-like plant. Unlike its more tropical cousin the hibiscus, this plant grows well in most of the United States, flourishing from hardiness zones 5B through 9A. It requires little to no care, and makes an excellent centerpiece within a landscape. It is most commonly and easily propagated by starting clippings from a mature plant.
Blend 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.
Choose softwood stems with smaller leaves and buds from a healthy rose of Sharon plant. Take clippings approximately 4 to 6 inches in length. Ensure that the clippings have at least three pairs of leaves.
Remove the leaves from the bottom third of each clipping with a sharp knife and dust the cut end with rooting hormone. Tap the end of the clipping to remove any excess powder.
Insert each clipping 1/3 to 1/2 its length into the rooting medium. Water the clippings and cover them with a plastic bag to maintain humidity. Place the clippings in a warm, sunny area, watering regularly, keeping the soil damp but not wet.
The rose of Sharon clippings will begin to root after a few weeks. Transplant the clippings, once the roots are well developed, to 1-gallon pots to be grown out. Once they have matured, transplant them to the landscape.