N48 W30756 Hill Street, Hartland, WI 53029
262-367-6464
Open days a week
Monday - Sat 9-5
Sunday 11-3
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Japanese Beetles
For information regarding identification and control of Japanese beetles, we recommend the article Japanese Beetle Management in Minnesota by UMN Horticulture Extension
We recommend 12-month Tree & Shrub Insect Control by Bayer for year-long insect control. This systemic pesticide is taken up by the roots and needs only to be applied once per year. It can take up to three months for large trees to be protected. Therefore, it is best to apply well before any infestation occurs, such as in early fall.
Additional Resources
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Japanese Beetle by UW-Horticulture Extension, and more complete versions (pdfs) at Japanese Beetles and Turfgrass Disorder: White Grubs
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Homeowner's Guide to Managing the Japanese Beetle by the USDA (PDF)
Japanese Beetles have been a major garden pest in recent years. As their name suggests, these beetles are not a part of the native Wisconsin environment. Japanese beetle grubs will feed below ground on turfgrass roots, while adults will defoliate over 300 species of trees, flowers, fruits on vegetables.
Image courtesy of David Cappaert, Michigan State University, Bugwood.org
