Japanese beetles - Knowledgebase Question

Waldoboro, Ma
Question by lindablackma
March 3, 2010
Is it true that if you aerate your lawn in the spring by poking holes in it, that it will get rid of much of your Japanese beetle infestation later in the year?


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Answer from NGA
March 3, 2010

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Not necessarily. Aerating your lawn will help with compaction but Japanese beetle grubs will be deep in the soil in the spring so aerating the top few inches of soil won't affect them. They move closer to the soil surface when the soil warms up in the summertime. That's when they are most susceptible to chemical treatments such as GrubEx. I'd use GrubEx or Bayer Advanced Season Long Grub Control to take care of them.

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