Plant Disease Diagnostics Clinic Mission

The University of Wisconsin-Madison/Extension Plant Disease Diagnostics Clinic (PDDC) provides assistance in identifying plant diseases and provides educational information on plant diseases and their control. PDDC clients include agricultural and horticultural producers (e.g., farmers, nursery owners), agricultural and horticultural professionals (e.g., crop consultants, arborists), home gardeners, Extension staff and Master Gardener volunteers, and state and local government (e.g., Wisconsin DNR, city and county foresters). While the Plant Disease Diagnostics Clinic focuses on plant disease problems in the state of Wisconsin, any interested party is welcome and encouraged to take advantage of and participate in the Clinic’s educational services and activities.

  If after exploring this website, you have questions about PDDC services feel free to contact the clinic at 608-262-2863 or

Garden Expo Ad

The 2016 Garden Expo will be held February 12-14, 2016 at the Exhibition Hall of Alliant Energy Center in Madison, WI.  The PDDC booth is #833-834. Stop by and ask Brian, UW-Madison Department of Plant Pathology students, and volunteers (Lis Friemoth, The Garden Hoe!) your plant disease questions. 

Friday, February 12, 2016:  2:00 PM – 8:00 PM

Booth (Main Hall):  2:00 PM – 8:00 PM
Seminar – Diseases of Trees and Shrubs (Mendota 5):  6:00 PM – 7:00 PM

Saturday, February 13, 2016:  9:00 AM – 6:00 PM

Booth (Main Hall):  9:00 AM – 6:00 PM
Seminar – Garden Talk with WPR’s Larry Meiller (Mendota 4):  9:30 AM – 10:30 AM
Seminar – Diseases of Trees and Shrubs (Mendota 5):  3:30 PM – 4:30 PM

Sunday, February 14, 2016:  10:00 AM – 4:00 PM

Booth (Main Hall):  10:00 AM – 4:00 PM