Tree pruning promotes growth Tree pruning actually promotes new growth. When you remove branches that have problems or are not attractive, your tree can devote more resources (such as water and nutrients) to other parts of the plant. Pruning stimulates growth if done correctly. There are small nodules or regions along each plant structure that contain growth hormones, and if you prune directly above them with a clean, sharp tool, these hormones are activated to repair or regrow plant tissue.
Young trees that are improperly pruned or not pruned at all for several years may require intensive pruning to remove larger branches and prevent trees from deforming. It's better to let a tree or shrub grow naturally than to prune without understanding how the plant will respond.