The North Central Plant Diagnostic Network (NCPDN) is a collaboration of experts in Plant Pathology, Entomology, Nematology, & Weed Science from land grant university plant diagnostic laboratories, as well as agencies and other federal stakeholders, in 8 states. The NCPDN consists of six of the Great Lakes States plus Iowa and Missouri. Our experts provide diagnostic services, support, knowledge, and experience in performing diagnostic testing and analysis to determine the cause of plant problems and to report outbreaks to help safeguard our food, forests, and communities.