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Plant Diagnostic Clinic

The UVM Plant Diagnostic Clinic aids Vermont greenhouses, farms and orchards by assisting in the identification and management of diseases, pests and weeds. Management options are based on integrated pest management principles (IPM).

Pest of the Week 2024 . Press Release (pdf)


Lab Operations

Due to the ongoing COVID-19 Pandemic, the UVM Plant Diagnostic Clinic will continue to accept email submissions of photos and questions. Physical samples will be limited to those from commercial growers, Extension specialists, and UVM researchers submitted through mail. If you are sending a sample, please contact Ann Hazelrigg to alert her since mail delivery and time in the lab will be limited. Please contact Ann through email ann.hazelrigg@uvm.edu or cell phone 802-355-0144. Thanks for your understanding.

Clinic Services

Many HOMEOWNER garden problems can be quickly solved at no cost by speaking with an Extension Master Gardener at 802-656-5421.

If you are a COMMERCIAL grower in Vermont,  please follow the following steps:

  1. Contact the PDC: (802) 656-0493 or Ann.Hazelrigg@uvm.edu. Photos can be emailed, but may need to be sent one at a time if large.
  2. Supply a sample of the problem plant or insect including a completed Plant Diagnostic Clinic Specimen Form (pdf).
  3. Special instructions for collecting, preparing, and mailing specimens should be followed closely in order to make accurate identification. Be sure to include an address, phone number and email address.
  4. Enclose a $15.00 check for diagnosis made out to UVM.
  5. The PDC will contact you with results and may make recommendations for management of the problem.

Contact Us

UVM Plant Diagnostic Clinic

201 Jeffords Building
63 Carrigan Drive, Burlington, VT 05405

Hours: Monday - Friday, 9:00 a.m. - 4:00 p.m.
(802) 656-0493; Ann.Hazelrigg@uvm.edu


There is Pay-by-Space parking located to the left of  Jeffords Hall. The clinic is located on the 2nd floor on the south side of the building. If no one is in the office please leave sample and submission form in the box next to lab door.

Clinic Staff

Ann HazelriggAnn Hazelrigg, Director, Plant Diagnostic Clinic

(802) 656-0493; Ann.Hazelrigg@uvm.edu

Ann Hazelrigg is the Director for the Plant Diagnostic Clinic at the University of Vermont. Other responsibilities include the VT IPM Program, the VT Pesticide Education and Safety Program and the UVM Extension Master Gardener Program. Ann also has research programs addressing disease issues important in Vermont and New England crops. Ann received her undergraduate Horticulture degree from Colorado State University, a Master’s Degree in Pomology and Plant Pathology from Cornell University and a Ph.D. in Plant and Soil Science at University of Vermont.



Plant Diagnostic Clinic Logo

Garden & Landscape
Tips from PDC:

'Across The Fence'

2019 Seasonal Garden & Landscape Tips (on YouTube) with Leonard Perry and Ann Hazelrigg:

Visit Across the Fence for more recordings and schedule of upcoming programs.

Home horticulture questions?

National Plant Diagnostic Network - logo

This work is supported by Crop Protection and Pest Management Program [grant no. 2021-70006-35509/ project accession no. 1027204] from the USDA National Institute of Food and Agriculture. Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture.