Virginia State University - Disease fact sheets listed by type of plant including field crops, vegetables, herbaceous ornamentals, and woody shrubs and trees. North Carolina State University - Notes on disease identification and control for alfalfa, corn, cotton, fruits, nuts, ornamentals, soybeans, tobacco, turfgrass and vegetables. Alabama Cooperative Extension System - Publications - Searchable information on diseases of cotton, fruits, ornamentals, peanut, turf, vegetables, and wheat. Pennsylvania State University - Plant Pathology Fact Sheets - Provides diagnosis and control measures for common diseases of ornamental plants frequently grown in the northeastern U.S. Pacific Northwest Plant Disease Management Handbook - Searchable guide on control and management of important plant diseases in the Pacific Northwest, USA. University of Florida - Description and control practices of crop, citrus, fruit, ornamental, turf and vegetable diseases commonly occurring in the local region. Texas Plant Disease Handbook - Disease information and images on hosts including vegetables, landscape plants, and industry and specialty crops. Department Plant Pathology and Microbiology, Texas A&M University. University of Illinois - Description and control of some common plant diseases.