Check out the January 2026 Plant Disease Diagnostics Clinic Note (What’s Cooking at the PDDC?) available at pddc.wisc.edu/2026/01/15/j.... This month I write about the youth-oriented projects I’ve been working on at the Plant Disease Diagnostics Clinic.

The 1/9/26 Wisconsin Disease Almanac (a summary of the week’s disease diagnoses at the PDDC) is now available on the PDDC website at pddc.wisc.edu/wisconsin-di....

Check out a brand new UW Plant Disease Facts fact sheet entitled "Plant Problems to Watch for in 2026" (authored by Brian Hudelson), available at pddc.wisc.edu/search-fact-.... Also, take the corresponding quiz and earn the medallion at pddc.wisc.edu/medallion-qu.... Enjoy!

Check out the brand new PDDC Ask the Experts Q&A series at pddc.wisc.edu/ask-the-expe.... These monthly sessions are your chance to ask your burning gardening questions, cultivate your knowledge, and keep your plants thriving.

The 1/2/26 Wisconsin Disease Almanac (a summary of the week’s disease diagnoses at the PDDC) is now available on the PDDC website at pddc.wisc.edu/wisconsin-di....

The 12/19/25 Wisconsin Disease Almanac (a summary of the week’s disease diagnoses at the PDDC) is now available on the PDDC website at pddc.wisc.edu/wisconsin-di....

Registration for the 2026 PDDC Plant Disease Talks is now open. For descriptions of the talks and a link to the registration form, check out pddc.wisc.edu/2026-pddc-pl....

The 12/12/25 Wisconsin Disease Almanac (a summary of the week’s disease diagnoses at the PDDC) is now available on the PDDC website at pddc.wisc.edu/wisconsin-di....

The 12/5/25 Wisconsin Disease Almanac (a summary of the week’s disease diagnoses at the PDDC) is now available on the PDDC website at pddc.wisc.edu/wisconsin-di....

The 11/28/25 Wisconsin Disease Almanac (a summary of the week’s disease diagnoses at the PDDC) is now available on the PDDC website at pddc.wisc.edu/wisconsin-di....

The 11/21/25 Wisconsin Disease Almanac (a summary of the week’s disease diagnoses at the PDDC) is now available on the PDDC website at pddc.wisc.edu/wisconsin-di....

The 11/14/25 Wisconsin Disease Almanac (a summary of the week’s disease diagnoses at the PDDC) is now available on the PDDC website at pddc.wisc.edu/wisconsin-di....

The 11/7/25 Wisconsin Disease Almanac (a summary of the week’s disease diagnoses at the PDDC) is now available on the PDDC website at pddc.wisc.edu/wisconsin-di....

The 10/31/25 Wisconsin Disease Almanac (a summary of the week’s disease diagnoses at the PDDC) is now available on the PDDC website at pddc.wisc.edu/wisconsin-di....

‪The 10/24/25 Wisconsin Disease Almanac (a summary of the week’s disease diagnoses at the PDDC) is now available on the PDDC website at pddc.wisc.edu/wisconsin-di....

The 10/17/25 Wisconsin Disease Almanac (a summary of the week’s disease diagnoses at the PDDC) is now available on the PDDC website at pddc.wisc.edu/wisconsin-di....

The 10/10/25 Wisconsin Disease Almanac (a summary of the week’s disease diagnoses at the PDDC) is now available on the PDDC website at pddc.wisc.edu/wisconsin-di....

The 10/3/25 Wisconsin Disease Almanac (a summary of the week’s disease diagnoses at the PDDC) is now available on the PDDC website at pddc.wisc.edu/wisconsin-di....

The 9/26/25 Wisconsin Disease Almanac (a summary of the week’s disease diagnoses at the PDDC) is now available on the PDDC website at pddc.wisc.edu/wisconsin-di....

Check out the UW Lab Lens for 9/22/25 (hort.extension.wisc.edu/2025/09/22/u...), a summary of horticulture pests, diseases, and problems occurring throughout Wisconsin. Information comes from the weekly “Plant Health Insights” meeting of UW-Madison Division of Extension horticulture specialists.

The 9/5/25, 9/12/25, and 9/19/25 Wisconsin Disease Almanacs (summaries of disease diagnoses at the PDDC) are now available on the PDDC website at pddc.wisc.edu/wisconsin-di....

‪The 8/29/25 Wisconsin Disease Almanac (a summary of the week’s disease diagnoses at the PDDC) is now available on the PDDC website at pddc.wisc.edu/wisconsin-di....

‪The 8/22/25 Wisconsin Disease Almanac (a summary of the week’s disease diagnoses at the PDDC) is now available on the PDDC website at pddc.wisc.edu/wisconsin-di....

Check out the UW Lab Lens for 8/18/25 (hort.extension.wisc.edu/2025/08/18/u...), a summary of horticulture pests, diseases, and problems occurring throughout Wisconsin. Information comes from the weekly “Plant Health Insights” meeting of UW-Madison Division of Extension horticulture specialists.

The 8/15/25 Wisconsin Disease Almanac (a summary of the week’s disease diagnoses at the PDDC) is now available on the PDDC website at pddc.wisc.edu/wisconsin-di....

‪Check out the UW Lab Lens for 8/11/25 (hort.extension.wisc.edu/2025/08/12/u...), a summary of horticulture pests, diseases, and problems occurring throughout Wisconsin. Information comes from the weekly “Plant Health Insights” meeting of UW-Madison Division of Extension horticulture specialists.

‪The 8/8/25 Wisconsin Disease Almanac (a summary of the week’s disease diagnoses at the PDDC) is now available on the PDDC website at pddc.wisc.edu/wisconsin-di....

Check out the UW Lab Lens for 8/4/25 (hort.extension.wisc.edu/2025/08/05/u...), a summary of horticulture pests, diseases, and problems occurring throughout Wisconsin. Information comes from the weekly “Plant Health Insights” meeting of UW-Madison Division of Extension horticulture specialists.

The 8/1/25 Wisconsin Disease Almanac (a summary of the week’s disease diagnoses at the PDDC) is now available on the PDDC website at pddc.wisc.edu/wisconsin-di....

‪Check out the UW Lab Lens for 7/28/25 (hort.extension.wisc.edu/2025/07/28/u...), a summary of horticulture pests, diseases, and problems occurring throughout Wisconsin. Information comes from the weekly “Plant Health Insights” meeting of UW-Madison Division of Extension horticulture specialists.

The 7/25/25 Wisconsin Disease Almanac (a summary of the week’s disease diagnoses at the PDDC) is now available on the PDDC website at pddc.wisc.edu/wisconsin-di....

Check out the UW Lab Lens for 7/21/25 (go.wisc.edu/LL72125), summarizing current horticulture-related pests, diseases, and problems occurring throughout Wisconsin. Information comes from the weekly “Plant Health Insights” meeting of UW-Madison Division of Extension horticulture specialists.

The 7/18/25 Wisconsin Disease Almanac (a summary of the week’s disease diagnoses at the PDDC) is now available on the PDDC website at pddc.wisc.edu/wisconsin-di....

Check out the UW Lab Lens for 7/14/25 (go.wisc.edu/LL71425), summarizing current horticulture-related pests, diseases, and problems occurring throughout Wisconsin. Information comes from the weekly “Plant Health Insights” meeting of UW-Madison Division of Extension horticulture specialists.

The 7/11/25 Wisconsin Disease Almanac (a summary of the week’s disease diagnoses at the PDDC) is now available on the PDDC website at pddc.wisc.edu/wisconsin-di....

Want to test your plant disease knowledge? Read a UW Plant Disease Facts fact sheet, take the corresponding quiz, and earn a specially designed electronic medallion. Collect them all!! Details at pddc.wisc.edu/medallion-qu....

Check out two revised UW Plant Disease Facts fact sheets ("Slime Molds" and “Thyronectria Canker”), available at pddc.wisc.edu/search-fact-....

The 7/4/25 Wisconsin Disease Almanac (a summary of the week’s disease diagnoses at the PDDC) is now available on the PDDC website at pddc.wisc.edu/wisconsin-di....

The 6/27/25 Wisconsin Disease Almanac (a summary of the week’s disease diagnoses at the PDDC) is now available on the PDDC website at pddc.wisc.edu/wisconsin-di....

The 6/20/25 Wisconsin Disease Almanac (a summary of the week’s disease diagnoses at the PDDC) is now available on the PDDC website at pddc.wisc.edu/wisconsin-di....

The 6/13/25 Wisconsin Disease Almanac (a summary of the week’s disease diagnoses at the PDDC) is now available on the PDDC website at pddc.wisc.edu/wisconsin-di....

The 6/6/25 Wisconsin Disease Almanac (a summary of the week’s disease diagnoses at the PDDC) is now available on the PDDC website at pddc.wisc.edu/wisconsin-di....

The 5/30/25 Wisconsin Disease Almanac (a summary of the week’s disease diagnoses at the PDDC) is now available on the PDDC website at pddc.wisc.edu/wisconsin-di....

The 5/23/25 Wisconsin Disease Almanac (a summary of the week’s disease diagnoses at the PDDC) is now available on the PDDC website at pddc.wisc.edu/wisconsin-di....

The 5/16/25 Wisconsin Disease Almanac (a summary of the week’s disease diagnoses at the PDDC) is now available on the PDDC website at pddc.wisc.edu/wisconsin-di....

The 5/9/25 Wisconsin Disease Almanac (a summary of the week’s disease diagnoses at the PDDC) is now available on the PDDC website at pddc.wisc.edu/wisconsin-di....

The 5/2/25 Wisconsin Disease Almanac (a summary of the week’s disease diagnoses at the PDDC) is now available on the PDDC website at pddc.wisc.edu/wisconsin-di....

Check out the April 2025 Plant Disease Diagnostics Clinic Note [The Root of the Problem] available at pddc.wisc.edu/2025/04/28/a.... This month I discuss root rots and bleeding cankers that were prevalent in 2024 and have already been issues in 2025.

The 4/25/25 Wisconsin Disease Almanac (a summary of the week’s disease diagnoses at the PDDC) is now available on the PDDC website at pddc.wisc.edu/wisconsin-di....

Check out a brand new UW Plant Disease Facts fact sheet entitled "Plant Problems to Watch for in 2025" (authored by Brian Hudelson), available at pddc.wisc.edu/search-fact-.... Also, take the corresponding quiz and earn the medallion at pddc.wisc.edu/medallion-qu.... Enjoy!