Chestnuts

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Michigan chestnut crop report – May 21, 2026

Published on May 27, 2026
Black stem borer activity continues. Growers should be trapping for adults and treating vulnerable trees. Potato leafhopper could arrive at any time.
2026 Status of herbicide-resistant weeds in Michigan

Published on May 13, 2026
Herbicide resistance screening is conducted by MSU Plant & Pest Diagnostics every year. In 2025, there was a rise in waterhemp submissions.
Michigan chestnut crop report – May 11, 2026

Published on May 13, 2026
Black stem borer activity has begun. Growers should be trapping for adults and treating vulnerable trees.
Updated Michigan Chestnut Management Guide now available

Published on May 12, 2026
The Michigan Chestnut Management Guide offers important information at your fingertips and is available for free.
MSU Pesticide Safety Education Program offers Core Review training for pesticide applicators

Published on May 5, 2026
New pesticide safety training service offers 4-hour Core Review sessions to support pesticide applicator certification preparation and provide up to 4 RUP recertification credits.