Trees are an important part of the landscape, but there are a variety of factors that can cause them to be unhealthy or even die in some cases. The challenge with diagnosing tree problems is that there can often be more than one factor involved. There is information on this site that will teach you how to evaluate your sick tree, how to collect needed background

information, and how to contact local and state experts for assistance. There is also information on a variety of common insect and disease problems found on trees in Iowa.
Off-Site Web Resources
Diagnosing Tree Problems
Common Oak Health Problems
Common Ash Problems
Emerald Ash Borer
Common Elm Problems
Common Pine Problems
Common Insect / Disease Problems