ISA BEST MANAGEMENT PRACTICES - TREE PRUNINGISA has developed a series of Best Management Practices (BMPs) for the purpose of interpreting tree care standards and providing guidelines of practice for arborists, tree workers, and the people who employ their services. This updated BMP, 2019, provides reasons why pruning should be undertaken, explains pruning types, provides background on pruning cuts, reviews sample pruning specifications, and comments on the timing and necessity of these