Japanese Beetles - Knowledgebase Question

Springfield, Mi
Question by eeya_22
June 30, 2010
My apple tree has been invaded by Japanese beetles, which are quickly defoliating the tree, and I fear they will kill it soon. Most of the advice I can find involves picking the beetles off by hand and dropping them in soapy water, and applying a bacteria to the lawn to kill the grubs (3 year process). I cannot find any useful solutions for getting them off a full grown tree. Any suggestions?

Answer from NGA
June 30, 2010


Carbaryl (Sevin 50WP) will control the adults but I prefer to use something a little less powerful. Try neem oil (Bonide Bon-Neem or Green Light Neem Concentrate) or cyfluthrin (Bayer Advanced Garden Power Force Multi-Insect Killer Concentrate) or permethrin (Spectracide Bug Stop Multi-Purpose Insect Control Concentrate) are labeled for use against Japanese beetles on crape myrtle and on fruit trees. As with all pesticides, read and follow all label instructions and precautions.

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