Biologists with the Iowa State Extension say Iowa’s Japanese beetle population has increased this summer. Gene Mohling with the Washington County Extension says the insects are hard to prevent from infesting garden areas, but specialists offer tips to keep the damage low. He says adult Japanese beetles feed on over 300 types of plants.
He says beetles prefer grape, cherry, apple, rose, and other plants found in local gardens, and encourages gardeners to keep an eye on these types of plants through the summer.
For residents whose gardens have experienced a noticeable infestation of Japanese beetles, a help line is available offering advice on how to deal with the insects.
Gardeners with questions can call the Washington County Extension office.