Annually the Streets Division coordinates the pruning of boulevard trees in one of six zones throughout the City. Boulevard tree trimming is done during the winter months when most trees are dormant; this minimizes the stress to the tree and reduces the incidence of disease transmission. Branches are pruned throughout the tree to remove unhealthy, broken, or rubbing limbs to improve the overall health and symmetry of the tree. This annual pruning program is also necessary to provide safe sight lines and allow sufficient overhead clearance for delivery trucks, City vehicles, and maintenance equipment. Ultimately, the results of the annual pruning program are to keep the tree less susceptible to wind damage and disease.
The Streets Division is responsible for more than 3,700 City-owned trees.