California Oak Mortality Task Force - Task force focusing on the pathogen causing Sudden Oak Death disease through research, management, education and public policy.
Dutch Elm Disease - Provides information on this disease caused by Ophiostoma ulmi, its host plants, symptoms and recommendations.
Focus on Woody Plant Diseases - Information by host plant on diseases and damages affecting trees and perennial flowers from the University of Illinois Extension.
Iron Chlorosis on Trees - Provides information on this condition, the most susceptible trees and recommendations for treatment.
Key to the Forest Insect Pests of Papua New Guinea - Allows the identification of the most important forest insect pests of Papua New Guinea and includes descriptions of insect signs, preventive measures, bibliographic references and a comprehensive glossary of terms
Monitoring Sudden Oak Death - Created by the University of California's Sudden Oak Death Research Team, this site monitors the distribution of the disease.
Oak Wilt - Information on this disease caused by the fungus Ceratocystis fagacearum, its hosts, symptoms and recommendations for control.
Pine Root Rot: A Biocontrol System - Information on the use of the weakly parasitic fungus, Phlebiopsis gigantea, to prevent the attack of the pathogenic fungus, Heterobasidion annosum.
Plant disease diagnostics (Minnesota) - Plant disease diagnostics by the University of Minnesota Extension Service. Mainly designed for plant disease problems in yards and gardens. It is based on visual observations of symptoms. It has a section on trees that might be useful in forestry.
Problem: Galls - Provides information on these abnormal growths caused by insects and recommendations on control.
Sedelmeier Forestry Research Fund - Provides funding for critical research into the causes, control, prevention, and the eventual elimination of some of the diseases that affect the trees of our forests.
Tent Caterpillars - The Eastern tent caterpillar affects black cherry trees and other fruit and shade trees. The forest tent caterpillar infests hardwood trees such as sugar maple and oak.
