Services and Fees

About the Clinic

Samples can be mailed to or dropped off at:

    University of Missouri—Plant Diagnostic Clinic
    28 Mumford Hall
    Columbia, MO
    Drop off hours are: Monday—Friday 9am-4pm and by appointment.

*There is a 30 minute parking spot located behind Mumford Hall. The clinic is located in the basement. If no one is in the office please leave sample and submission form, together, on the desk beside office door.


Mission statement

The mission of the clinic is to provide accurate, timely answers and management recommendations to plant health questions and problems encountered by the citizens of Missouri. Management recommendations reflect research-based results and an integrated pest management philosophy.

The mission is accomplished through:

Daily operation of the clinic
  • Most samples submitted through the mail, some digital image submissions and personally delivered samples
    • 25 percent of samples submitted through regional extension specialists
    • 75 percent of samples submitted through other agencies, businesses or by private citizens
Plant pathology education
  • Training to extension specialists
  • Master Gardener training
  • Contributions to newsletters
  • Conferences and short courses
  • Other invited seminars and presentations

Clinic staff

Patricia Hosack
Director of Plant Diagnostic Clinic

Lee Miller
Faculty Supervisor and Turfgrass Pathology

Additional support faculty:

Wayne Bailey
Identification and management recommendations of field crop pests

Kevin Bradley
Identification of plants, weeds and herbicide injuriy as well as weed control recomendations

Johann Bruhn
Identification of fungi

Brad Fresenburg
Turfgrass management recommendations

Richard Houseman
Identification and management recommendations of urban and structural pests

Jeanne Mihail
Identification of fungal pathogens

Manjula Nathan
Nutrient, soil analysis and fertility recommendations

Jim Schoelz
Virus testing

Laura Sweets
Management recommendations for diseases of field crops

David Trinklein
Management recommendations for cultural problems of greenhouse crops

Michele Warmund
Management recommendations for cultural problems of fruit crops

Bill Wiebold
Management of cultural problems of field crops