When you have a healthy, lush rose of Sharon plant in your landscaping plan it can add height and color to the look around your home and garden. A sick-looking rose of Sharon plant, or one that is failing to bloom well, luckily doesn't have to be dug up and removed. With good trimming on a regular basis, your rose of Sharon can bounce back and give large blooms once again as well as a nice spot of shade in the garden.
Plan to trim your plant in early spring when the buds are starting to swell along your rose of Sharon's branches. To get a good idea of where you need to prune, look over the body of the plant for misshapen, old or weak branches, which are crooked, break easily or droop rather than reach upward.
Clip the branches you have selected for removal just after a swollen bud with a straight horizontal cut. Before you clip, be sure you are leaving behind two to three buds on each of the branches you are going to cut.
Clear up the base of your rose of Sharon if your plant is growing in a lawn or grass area. You can do so by cutting out excess branches that start at the base of the plant at ground level. This will promote a tree-like shape and leave the area as clear as possible for mowing.
Form screens or hedges with your rose of Sharon by leaving the base of the plant alone and only clipping around the upper body of the plant where needed to shorten the top or trim in the sides. If your plants are young, it may take a few years before your screen is full, so minimal trimming is needed for shaping early on.
Cut the entire plant down to only 2 to 6 feet tall to give it a new start only if it is extremely old and overgrown. This method, however, should only be done in the second year after a good trimming following the steps above to be certain a basic pruning isn't all that is needed.