Latest Grape News and Resources

Understanding and Addressing Uneven Ripening in Grapes
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Sep 12th
20240912

Understanding and Addressing Uneven Ripening in Grapes

By Amaya Atucha

As we approach harvest, many Wisconsin grape growers have reported uneven ripening across clusters and even within individual clusters. This issue, though not uncommon, presents […]

WI Grape Grower Alert: Proposed Cancellation of Mancozeb in Grape Production
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Sep 12th
20240912

WI Grape Grower Alert: Proposed Cancellation of Mancozeb in Grape Production

By Leslie Holland

Update: The comment period has been extended to October 16. Dear Wisconsin Grape Growers – Many of you are already aware that the EPA is […]

Vineyard Scouting Report: September 11, 2024
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Sep 12th
20240912

Vineyard Scouting Report: September 11, 2024

By Courtney C Meeks, Mike North, Leslie Holland, and Amaya Atucha

As we are beginning the end of the season, anticipation is in the air. Harvest has begun around Wisconsin for earlier varieties with some nearing […]

Vineyard Scouting Report: August 28, 2024
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Aug 29th
20240829

Vineyard Scouting Report: August 28, 2024

By Courtney C Meeks, Mike North, Leslie Holland, and Amaya Atucha

Walking out my door this morning, it didn’t feel like I was opening my oven – finally. The heat wave over the last several days […]

Free Fungicide Resistance Testing for Wisconsin Grape Growers
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Aug 29th
20240829

Free Fungicide Resistance Testing for Wisconsin Grape Growers

By Courtney C Meeks and Leslie Holland

Dear Wisconsin grape growers: Graduate student, Courtney Meeks, is collecting powdery mildew and downy mildew samples for free fungicide resistance testing. If you are observing powdery mildew and/or […]

Wisconsin Vineyard Update, August 2024 – Late Season Downy Mildew
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Aug 26th
20240826

Wisconsin Vineyard Update, August 2024 – Late Season Downy Mildew

By Leslie Holland and Courtney Meeks

As we near harvest season, many Wisconsin vineyards are experiencing the effects of a rainy season on fruit clusters. Several commercial growers have reported dealing […]

Vineyard Scouting Report: August 14, 2024
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Aug 16th
20240816

Vineyard Scouting Report: August 14, 2024

By Courtney C Meeks, Mike North, Leslie Holland, and Amaya Atucha

The start of August was unprecedented—cool mornings and highs in the mid-70’s! It has felt like autumn, and I am not upset. Showers appear to […]

Vineyard Scouting Report: July 29, 2024
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Aug 1st
20240801

Vineyard Scouting Report: July 29, 2024

By Courtney C Meeks, Leslie Holland, Amaya Atucha

Just like that, it’s almost August! Veraison has set in for Southern Wisconsin vineyards, so the anticipation for harvest is upon us. We cover that […]

Vineyard Scouting Report: July 17, 2024
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Jul 18th
20240718

Vineyard Scouting Report: July 17, 2024

By Courtney C Meeks

A cool front has made its way into Wisconsin. I think we are all sighing with relief and soaking up the cooler temperatures for however […]

Notes From the Vineyard: Poor Fruit Set
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Jul 5th
20240705

Notes From the Vineyard: Poor Fruit Set

By Amaya Atucha

In southern Wisconsin most of the grape cultivars have reach the E-L* stage 31 (Berries pea-size) stage. One thing I have noticed in many wine […]