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Due to the COVID-19 outbreak, the PDDC is currently only accepting photos for digital diagnoses. Please click here to submit your photos. There is no charge.
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.
Sample Submission Forms
How to Collect a Sample
How to Submit a Sample by Mail
How to Submit a Sample in Person