| Home > Pest management > Japanese Beetle |
Japanese beetle larvae overwinter in the soil, pupate in the spring, and emerge as adults in mid-June to July (in Michigan). Adults skeletonize leaf tissue and may also attack fruit of cherry, plum, peach and nectarine. Adults often feed in groups on warm, sunny days, removing large portions from the fruit, particularly on early ripening peach.
Monitoring: Use attractant-baited traps to monitor adult emergence. Examine fruit and leaves each week from the time of adult emergence through July. Young trees are particularly vulnerable to the leaf injury. |
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| Adults are bright metallic-green with coppery-red wings and small white tufts on the sides and tips of the wing covers (about 12 mm). |
Attractant-baited trap. |
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- For more monitoring information and evaluation of available pesticides:
Michigan Fruit Management Guide
- MSU Diagnostic Services for assistance in pest identification.
- MSU Fruit Crop Advisory Team Alert newsletters for current pest/crop conditions.
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| This information was developed from A Pocket Guide for IPM Scouting in Stone Fruits by David Epstein, Larry J. Gut, Alan L. Jones and Kimberly Maxson-Stein. Purchase this in a pocket-sized guide for reference in the orchard from MSU Extension (publication E-2840). |
