There are over 20 tree disease that contribute to health decline and death of most of the trees in the United States. This list of tree diseases cause most tree health problems and death. These diseases are the cause of significant replacement expense of yard trees and the commercial expense of future losses of forest products.
Plant pathology on-line provided by the American Phytopathological Society...
The ultimate tree biologist...
An entomology and forest resources digital information work group to include tree diseases...
"This site is provided as an aid to those learning forest and shade tree pathology. It has been called an online textbook; I hope that it lives up to that billing."
The official Forest Health site including monitoring...
From the Canadian Forest Service...
Major Forest Pests of North America...
A site maintained by the Colorado State Forest Service...
UGA report on Littleleaf disease...
How to identify non-infectious forest pathogens ...
A really good overview of forest pests from Ohio's Department of Natural Resources, Division of Forestry...
Morton Arboretum handout on pine diseases (pdf)...
WVU's site on bark to include wounds and disease...
A USFS publication by tree physiologist Alex Shigo...
Handbook of root diseases from British Columbia Ministry of Forests...
The U.S Forest Service, State and Private, brings you forest health publications you can download...
A directory of forest pesticide labels from the Alabama Cooperative Extension Serivce...
