The main reasons for pruning ornamental & shade trees include safety, health, and aesthetics. In addition, pruning can be used to stimulate fruit production. Pruning for safety involves removing branches that could fall and cause injury or property damage, trimming branches that interfere with lines of sight on streets or driveways, and removing branches that grow into utility lines.
Pruning involves removing diseased or insect-infested wood, thinning the crown to increase airflow and reduce some pest problems, and removing crossing and rubbing branches. Pruning is used to help trees to develop a strong structure and reduce damage during severe weather.