We can properly trim overgrown trees in a way that keep their health and beauty integrity and will allow for strength growth to continue. A good way to determine when a stand should be thinned is to look at the live crown ratio, the percentage of the length of the stem that has live branches. Shape is another clue to how well a tree will fit the space you have available, what problems might occur, and how well it will help meet the goals you have for your property. The pruning trees include safety, health, and aesthetics.