How to Prune Shrubs & Trees
March through early May is a great time to get out there and prune your shrubs and trees. Without foliage, the structure of the plant is clearly visible, making it easier to plan how you would like to direct growth. The worst of winter is past, and your plants will easily seal the pruning wounds when active growth begins.
Additionally, pruning in early spring allows you to avoid opening the plant to some diseases and pests that are active in warmer seasons.