If you have an overgrown shrub that is no longer flowering.
Jun 03, See how and when to prune your spring flowering shrubs to produce beautiful blooms next year. Find out more: stumppruning.bar In general terms, we want to prune after flowering is finished but before budding begins. You want to prune before buds are set to keep from disturbing the following year’s blooms. As a rule, flowering plants that bloom in early spring on old wood (or growth from the previous season), like azaleas, should be pruned a week or two after flowering.
Apr 20, DO Prune Flowering Shrubs at the Right Time of Year Spring-flowering shrubs, such as lilac and forsythia, develop buds that will display the following year during the Estimated Reading Time: 5 mins. Mar 02, Give it a good trim after it flowers in the spring by cutting back the tips of the stems to the top leaf bud. This removes the dead blossoms and also may trigger a second blooming and new leaf growth.
You can also shape the shrub at this time. More drastically cutting back spirea should occur in the fall or in late winter to early spring.