Category Archives: Ornamental Pest

Japanese Beetle Season

It’s that time of the year again.  Much to the dismay of gardeners and landscapers in Wisconsin, the first reports of Japanese Beetle adults came in last week from the La Crosse area.  Additional reports from Dane, Racine, Sauk, and Rock counties have trickled in over the last few days.  Despite the deep frosts reported last winter, the soil-dwelling grubs managed to survive just fine and the adults are popping out as if it were a typical year.  Based on our history in the state, we’ll likely be seeing the Japanese beetles until early September.

Japanese Beetle Adults
Japanese beetle adults on turfgrass; Photo credit PJ Liesch