The objective of trimming is to produce strong, healthy, attractive trees.  By understanding how, when
and why to trim, and by following a few simple principles, this objective can be achieved.

The main reasons for trimming ornamental and shade trees include safety, health, and aesthetics. In
addition, trimming can be used stimulate fruit production and increase the value of timber.

Trimming for health involves removing diseased or insect-infested wood, thinning the crown to increase
airflow and reduce some pest problems, and removing crossing and rubbing branches. Trimming can
best be used to encourage trees to develop a strong structure and reduce the likelihood of damage
during severe weather.