May 29, It’s safe to prune Rose of Sharon down to bare stubs that are only 2–3 feet (– m) in length while it’s still dormancy. Keep in mind that the more branches you cut, the fewer flowers there will be when the shrub finally blooms%(86). Jul 24, How to Prune a Rose of Sharon. When pruning rose of Sharon shrub, begin by removing any branches that appear dead or damaged from storm or winter damage.
Also, remove branches that appear to have gone awry or are growing in the wrong direction. Top, upright growth may be pinched back to encourage the growth of side stumpfelling.buzzted Reading Time: 5 mins. Feb 08, 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 stumpfelling.buzzted Reading Time: 3 mins.