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Welcome to the OSU Plant Clinic


The Oregon State University Plant Clinic is a diagnostic facility associated with and housed in the Department of Botany and Plant Pathology. The Plant Clinic has been operational since 1954. As part of the OSU Cooperative Extension Service, the primary mission of the Plant Clinic is educational. Extended education is provided by helping our clients recognize the nature of their plant problem (diagnosis) and by helping them to manage the disease or disorder using proper control methods, including cultural, biological, and chemical measures. Emphasis is on prevention of problems by proper management.

Our clients include individual growers; field representatives of chemical and fertilizer companies and food processors; home gardeners; and employees of State and Federal organizations in Oregon.

In 2003 the Plant Clinic became part of the newly established National Plant Diagnostic Network (NPDN), and shortly thereafter it was designated an expert laboratory for the Western Region of the NPDN. As such the Plant Clinic serves as a resource lab and conducts specialized tests for Oregon, Washington, Idaho, and Alaska.

In 2003 the Plant Clinic also joined forces with OSU’s Insect Identification Service. Now all insect, arthropod, mollusk, and plant samples come to one location.