Tree Pests

Insects and diseases are leading causes of damage, low vigor and death in trees. To maintain the health of your trees, it's important to know about some of the most common diseases and insect pests and how to avoid or control them.

If you suspect you have a tree or shrub that's affected by a disease or insects, contact your local extension forester or arborist. The Web sites listed below provide general information about common insect pests and diseases that affect trees.

Resources

Resources