Cheryl Smith, Ph.D.

Cheryl Smith, Ph.D.

Extension Professor/Specialist, Plant Health



Cheryl Smith officially joined UNH Cooperative Extension in 1993. As Director of the UNH Plant Diagnostic Lab (UNH-PDL), she is responsible for the daily operation of the Lab. The UNH-PDL offers diagnostic services to help solve plant health-related problems for both commercial producers and home horticulturists. Diagnostic services include the identification of plant pathogens, stress-related problems, and insect pests as well as educational information regarding management and prevention. Cheryl's additional responsibilities include delivering outreach educational programs on plant health and providing training in the identification and management of plant diseases and disorders to commercial producers, Extension Educators and home horticulturists. Cheryl has taught classes in forest pathology, pest management, and introductory plant pathology. Her current teaching responsibilities focus on Introductor Plant Pathology and guest lectures in several Plant Biology and Thompson School classes.

Educational Background


  • Bachelor of Arts in Biology from Plymouth State College in 1978.
  • Masters of Science in Plant Pathology and Entomology from the University of Rhode Island in 1983.
  • Doctor of Philosophy in Botany and Plant Pathology from the University of New Hampshire in 1992.

Professional Associations


  • American Phytopathological Society

Program Specialty Areas


  • Provides plant health information and educational programs for NH's commercial agricultural community and home horticulturists. Serves as a resource for information and In-Service training for UNHCE Educators and Specialists in Agricultural and Forest resources. Provides training to NH Tree Stewards and Master Gardeners in the identification and management of plant diseases and disorders.
  • The UNH Plant Diagnostic Lab offers diagnostic services to commercial producers, arborists, landscapers, and home horticulturists. The diagnostic services include identification of plant pathogens, pests, and stress-related problems, and information regarding cultural management aimed at future prevention.

Select Publications


  • C. A. Smith and W. G. Lord, Gibbera Twig Blight, a New 'Old' Disease on Highbush Blueberry, 1996.
  • C. A. Smith, Diagnosing Plant Problems, Proceedings of the New England Greenhouse Conference, 1994.
  • C. A. Smith and W. E. MacHardy, Conidium productivity by Venturia inaequalis on 7 apple cultivars, 1993.
  • 10 Easy Steps to Prevent Garden Diseases
  • Turfgrass Diseases: Cultural Management Recommendations
  • Dogwood Anthracnose (J. Weaver, co-author)
Cheryl Smith
Spaulding Hall
Durham, NH 03824