Plant Disease Diagnostics Clinic

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2023 PDDC Plant Disease Talks
2024 PDDC Monthly Disease Talk Registration Form
2024 PDDC Plant Disease Talks
2025 PDDC Monthly Disease Talk Registration Form
2025 PDDC Plant Disease Talks
2026 PDDC Monthly Disease Talk Registration Form
2026 PDDC Plant Disease Talks
Ask the Experts: A Monthly Q&A Series
Building Block Plant Diseases
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Fact Sheet Listing – Diseases – Broad Leafed Woody Ornamental
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November 15, 2024 450 × 450 LEGOCARLeaf2024Redesign3X3

Building block cedar-apple rust leaf spots on a crabapple leaf

Cedar-apple rust leaf spots on a crabapple leaf

University of Wisconsin-Madison

University of Wisconsin-Madison

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Learn About Us:

Clinic Overview

Diagnostic Services

Get a Diagnosis:

Submit Digital Photograph
Submit Physical Sample

Outreach/
Education

Watch Talks & Workshops:

Ask the Experts Talks
Monthly Plant Disease Talks
Events
Book a Talk for Your Group

Watch Courses:

Fundamentals of Plant Diseases
IPM Scout School – Diseases of Field and Forage Crops

Watch/Listen to Media:

Brian on Wisconsin Public Radio
Brian on Wisconsin Public Television

Read/Listen to Resources:

Limerickettsia Book
Monthly Notes (Blog)
Plant Disease Fact Sheets
Plant Disease Pointers (Blog)
Scientific Publications
Wisconsin Hort Update Archive (Podcast)

Test Your Knowledge:

Disease Quizzes – Earn Medallions

Read Disease Stats:

Wisconsin Disease Almanac

Resources for Kids:

Building Block Plant Diseases

Visit Other Related Websites:

Links

Social Media

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University of Wisconsin-Madison

Website feedback, questions or
accessibility issues:

Email Brian Hudelson.

© 2026 Board of Regents of the University of Wisconsin System.

Plant Disease Diagnostic Clinic

1630 Linden Dr. Room 183

Madison, Wisconsin 53706

608-262-2863

View Hours, Directions, Map

UW-Madison College of Agricultural and Life Sciences
UW-Madison Department of Plant Pathology

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