The Plant Disease Information Office in New Haven is part of the Department of Plant Pathology and Ecology of The Connecticut Agricultural Experiment Station. The Inquiry Office in Windsor is part of the Valley Laboratory of The Connecticut Agricultural Experiment Station. They answer inquiries about plants and plant health and performs disease diagnosis for all Connecticut residents, including homeowners and professionals (e.g., arborists, commercial growers, landscapers, orchardists)

Plant samples can be submitted in person or by mail. Disease diagnosis involves visual assessment, microscopic examination, and other procedures as necessary. These include culture of the causal agent on artificial and selective media, serological tests, and various other procedures.

Questions or requests for information can be made by phone, fax, email, or in person.

Plant Pest Handbook

Plant Disease Information Office New Haven:
Follow this link for more information  (PDF Version) 

Link to Sample Submission Form  (PDF Version) (Interactive PDF)

Dr. Sharon M. Douglas  or  Ms. Mary K. Inman
Department of Plant Pathology and Ecology
The Connecticut Agricultural Experiment Station
123 Huntington Street, P. O. Box 1106
New Haven, CT 06504

Phone: (203) 974-8601
Toll-Free Phone Number Outside New Haven Area: 1-877-855-2237

Fax: (203) 974-8502
Email: Sharon.Douglas@ct.gov  or  Mary.Inman@ct.gov  

Inquiry Office Windsor:
Follow this link for more information
Sample Submission Form

Thomas Rathier
Inquiry Office
The Connecticut Agricultural Experiment Station
153 Cook Hill Road
P.O. Box 248
Windsor, CT 06095

Phone: (860) 683-4977
Fax: (860) 683-4987
Email: Thomas.Rathier@po.state.ct.us