Dec 05, For summer-blooming shrubs, you want to time your pruning to stimulate new flower-bearing growth. Ball says that the best time for this is late winter, right before buds break in spring. For smaller, multi-caned blooming shrubs up to about 6 feet high, Ball recommends removing one-third of the canes every two to three treedelimbing.buzzted Reading Time: 8 mins.
Remove crossing branches and branches that grow back towards the center of the tree. As young trees grow, remove lower branches gradually to raise the crown, and remove branches that are too closely spaced on the trunk. Remove multiple leaders on evergreens and other trees where a single leader is desirable. Shrubs. DO prune flowering shrubs at the right time of year. Spring-flowering shrubs, such as lilac and forsythia, develop buds in late summer and early fall that will display the following year.