Tree trimmers, also known as pruners, are professionals who specialize in the trimming and pruning of trees. They use specialized tools to remove dead or overgrown branches, as well as to shape and maintain the overall health of the tree. Tree trimmers must have a good understanding of tree biology and be able to identify potential hazards that could cause damage to the tree or its surroundings. They must also be able to work safely and efficiently in order to ensure the safety of themselves and those around them.