Pruning shade trees in the landscape

Pruning is a double-edged sword, either helping or hurting according to if, where, when, how, and why it is applied. When properly executed, a variety of benefits can occur. Benefits include reducing risk of branch and stem breakage, better clearance for vehicles and pedestrians, improved health and appearance, enhanced view, and increased flowering. When improperly performed, pruning can harm the tree's health, stability, and appearance and make matters worse.

The link address is: http://hort.ifas.ufl.edu/woody/pruning/