A preventive pruning program should be designed to create structurally sound trunk and branch architecture that will sustain a tree for a long time. The goal with mature trees is to develop and maintain a sound structure to minimize hazards such as branch failure. No tree should be pruned without first establishing clearly defined objectives. This fact sheet describes seven main objectives, along with pruning types that help meet those objectives, which can be expanded or shortened to meet site conditions and customer expectations. It also describes how to determine a pruning cycle and how to implement a preventative pruning plan for mature trees.
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