Ann Hazelrigg

I am the director of the Plant Diagnostic Clinic, a statewide resource for commercial growers, Master Gardeners, home gardeners and the general public. The lab identifies disease, insect and weed samples, and makes recommendations for control based on integrated pest management (IPM) principles. I also oversee the VT Master Gardener Program, the UVM Pesticide Education and Safety Program and the Extension E-IPM program.

Educational programs and curricula include pest and disease biology and identification, pest management strategies using the latest IPM technologies and the safe use of pesticides to improve crop health, increase farm profitability and protect public and environmental health



Richard G. Smith, Sonja K. Birthisel, Sidney C. Bosworth, Bryan Brown, Thomas M. Davis, Eric R. Gallandt, Ann Hazelrigg, Eric Venturini, and Nicholas D. Warren. 2018. Environmental correlates with germinable weed seed banks on organic farms across northern New England. Journal of Weed Science. Vol 66 Issue 1 11pgs 78-93.

Hazelrigg, A., Bradshaw, T.L., Maia, G.S., Kingsley-Richards, S.L. and Berkett, L.P. 2018. Disease susceptibility of cold-climate grapes in Vermont, USA. Acta Hortic. 1205, 477-482 DOI:10.17660/ActaHortic.2018.1205.58

Bradshaw, T.L., Hazelrigg, A. and Berkett, L.P. 2018. Characteristics of the cold-climate winegrape industry in Vermont, USA. Acta Hortic. 1205, 469-476 DOI:10.17660/ActaHortic.2018.1205.57 

Awards and Recognition

Chair, National IPM Coordinating Committee, 2018 to present

Treasurer, NE Division American Phytopathological Society 2019

Ann Hazelrigg

Areas of Expertise and/or Research

Plant Pathology, Integrated Pest Management, Pesticide Education


  • Ph.D, Plant & Soil Science, University of Vermont, 2015
  • M.S., Pomology & Plant Pathology, Cornell University, Ithaca, NY. 1981
  • B.S., Plant Pathology, Colorado State University, Fort Collins CO. 1977


  • (802) 656-0493
Office Location:

204 Jeffords Hall

Office Hours:

By appointment