Understanding Pruning Basics Pruning also encourages flowering, fruit production, and aesthetic appeal. Why Pruning Is Important for Trees and Shrubs Pruning removes damaged or diseased branches, preventing further harm to the plant. Top Pruning Practices for Trees and Shrubs 2. Deadheading: Cuts off spent flowers to encourage new blooms. https://tree-and-shrub-pruning.trustedstandard.com