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
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2026 PDDC Plant Disease Talks
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Search for:

Alternaria_Leaf_and_Stem_Blight_Ginseng_Leaf

June 30, 2015 274 × 277 Alternaria_Leaf_and_Stem_Blight_Ginseng_Leaf

Alternaria stem blight on three-year-old ginseng.

Alternaria stem blight on three-year-old ginseng.

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

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University of Wisconsin-Madison

Website feedback, questions or
accessibility issues:

hudelson@wisc.edu.

© 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

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

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