The Plant Disease Information Office (PDIO) is part of the Department of Plant Pathology and Ecology at The Connecticut Agricultural Experiment Station (CAES). The PDIO is a full-service plant disease diagnostic laboratory that assists all Connecticut stakeholders, including homeowners and professionals. Plant samples are diagnosed utilizing molecular, serological, biochemical, and traditional diagnostic methods. The PDIO also assists with inquiries about plants, plant identification, and plant health. Inquiries and samples can be submitted via phone, email, mail, and in person. More information can be found in the Sample Submission and PDIO Brochure sections.

Phone: (203) 974-8601

   Office Hours: The PDIO is open 8:30 a.m. - 4:30 p.m. Monday - Friday

PDIO Hours of Operation and Holiday List