Commercial Ground Care Landscaping Residential Tips & Tricks Dormant Pruning. What is it, and why is it needed? Dormant pruning is routine pruning maintenance that should be preformed during late fall and winter when the shrub or tree is not actively growing. This type of pruning is important for multiple reasons. Dormant pruning… by Jeremy Ohl - Jan. 20, 2020 chat_bubble_outline0 Tags: dormant pruning, plant health, plants, pruning, shrubs, trees