Feb 08, Rose of Sharon is an old fashioned favorite so it is common for gardeners to inherit one of these shrubs when they move into a new home and more often than not it will be overgrown. Young plants can be cut back pretty hard to encourage branching, but when reshaping an overgrown plant such as yours I always recommend removing only about a third of the length of the bushtrimmers.buzzted Reading Time: 3 mins.
May 29, As a rule, the best time to prune your Rose of Sharon is anywhere from March to early May, before the blooms begin to open.
Cutting back your Rose of Sharon too early or too late can “shock” the plant, leaving it vulnerable to the elements and stunting healthy new growth%(86).
Nov 06, Th e Dormant Season. The best time to cut Rose of Sharon is during the dormant season. This dormant season occurs in late winter or early spring, typically around March. However, the shrub will thrive in trimmed at any point in the following months until early bushtrimmers.buzzted Reading Time: 6 mins.