Before you prune, make sure your tools are sharp.
Feb 08, In addition to reducing the height, you can cut out dead or diseased wood and remove any out-of-control branches back to the base. Because rose of Sharon blooms on the current season’s growth it should be pruned in late winter. Next winter, remove any new growth from the previous year and an additional third from the existing old stumplopping.barted Reading Time: 3 mins.
May 01, How to prune rose of Sharon (Hibiscus syriacus). Rose of Sharon should be dormant pruned to remove crossing branches, branches that grow back into the shrub. Prune older rose of Sharon trees by first removing dead, broken or diseased wood. 8 Cut any stems that are outside of the tree's natural shape back to a point where they conform to the shape. 9.