A MESSAGE ON SERVICE CHANGES
The PDDC continues to have limited capacity to process physical samples. Click here for details on the clinic’s current submission process. Last Update: January 6, 2023.
The PDDC will continue to rely heavily on making digital diagnoses. Click here to submit your photos. There is a $20 fee for digital diagnostics. For a complete list of fees, click here.
IF YOU ARE FROM OUTSIDE WISCONSIN, PLEASE CONTACT THE PDDC BEFORE YOU SUBMIT A SAMPLE.
Free Testing at the UW-PDDC
- Boxwood Blight: Boxwood blight is a new and devastating disease of boxwood in Wisconsin. If you are seeing dieback in your boxwood shrubs, please send in a sample of leaves and branches for a free diagnosis, so that we can track where the disease is occurring in the state. Please fill out and submit the “General Samples” submission form below with your submission and write “Suspected Boxwood Blight” on the form.
- Late Blight: Late blight is a disease of tomato and potato that potentially can have a huge impact on commercial potato production in Wisconsin (Wisconsin is the third largest potato-producing state in the US). If you are seeing, spotting on the leaves of your potatoes and tomatoes and suspect late blight (or even if you don’t), please send in a sample of leaves and branches for a free diagnosis. Early detection of late blight is critical for providing timely and accurate control information for Wisconsin’s potato producers. Please fill out and submit the “General Samples” submission form below with your submission and write “Suspected Late Blight” on the form.
Clinic Brochure
Sample Submission Forms
- General Samples
- Aphanomyes Race Test Samples
(Contact the PDDC prior to submitting to determine the availability of this test)
How to Collect a Sample
How to Submit a Sample by Mail
How to Submit a Sample in Person