Plants that respond well to rejuvenation include, forsythia, lilac, and spirea.
The best time to prune healthy, well-maintained spring-flowering shrubs is immediately after flowering. (Healthy, well-maintained shrubs should require only light to moderate pruning.) Pruning immediately after flowering allows gardeners to enjoy the spring flower display and provides adequate time for the shrubs to initiate new flower buds for next season.
Summer-flowering shrubs, such as potentilla and Japanese spirea, bloom in summer on the current year's growth. Prune.
Dull blades can damage branches, creating tears that lead to disease.
Apr 02, Summer blooming shrubs such as summerweet (Clethra alnifolia) and blue mist spirea (Caryopteris x clandonensis) are pruned in late winter/early spring because their flower buds form on new wood produced during the current season. Spring flowering shrubs (those that bloom before mid-June) should be pruned after shrubhauling.barted Reading Time: 3 mins.
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.