When do I prune a deciduous hibiscus tree?
Name of plant althea hibiscus
Rose of Sharon or shrub hibiscus is pruned when dormant, late fall or winter. Most flowering shrubs benefit from removing 1/3 of the branches, starting with largest/oldest ones, to the ground. Old wood flowers less than young healthy growth and shrubs can get crowded and prone to disease if only the tops and sides are cut back. The following article discusses how to best prune your shrub. https://www.gardeningknowhow.com/ornamental/shrubs/rose-of-sharon/pruning-rose-of-sharon.htm