Tree trimming and pruning is important for healthy trees.

Although forest trees grow quite well with only nature’s pruning, landscape trees require a higher level of care to maintain their structural integrity and aesthetics. Improper pruning can create lasting damage or even shorten the tree’s life so tree trimming and pruning must be done with an understanding of tree biology.

Reasons for Pruning

Because each cut has the potential to change the growth of the tree, no branch should be removed without a reason. Common reasons for pruning are to

• Remove dead branches
• Improve form
• Reduce risk to property and other trees
• Increase light and air penetration to the inside of the tree’s crown or to the landscape below.

Routine thinning does not necessarily improve the health of a tree. Trees produce a dense crown of leaves to create the energy for growth and development. Removal of foliage through pruning can reduce growth and stored energy reserves. Heavy pruning can be a significant health stress for the tree.

There are many outside considerations, however, that make it necessary to prune trees. Safety, clearance, and compatibility with other components of a landscape are all major concerns. Proper pruning, with an understanding of tree biology, can maintain good tree health and structure while enhancing the aesthetic and economic values of our landscapes.