How to Control a Japanese Beetle Infestation

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Say goodbye to Japenese beetles in your garden! Follow a garden expert's tips for effective Japanese beetle control.

Damaged hibiscus leafCourtesy Mary Brigham
Japanese beetle damage on a hibiscus leaf

Japanese Beetle Control

“How do I control Japanese beetles and stop them from eating my hibiscus plants?” asks Mary Brigham of Spring Arbor, Michigan.

Japanese beetles feed on hibiscus and many other plants, causing this type of leaf damage (above). Healthy plants will survive the beetles’ nibbling, but look unsightly. Watch your garden closely for these coppery green beetles that eat and mate throughout the day. When you see them, remove them.

Psst‚ here’s how to get rid of the worst garden insects.

japanese beetle controlCourtesy Jan Halgrim
Japanese beetles and a painted lady butterfly on a coneflower

To control a Japanese beetle infestation, try knocking them into a can of soapy water or use a small hand-held vacuum to remove and eliminate them. You can also shield your garden beds with floating row covers to keep Japanese beetles from dining on susceptible plants. An organic insecticide containing the bacteria Bacillus thuringiensis galleriae is now also available to control these garden pests. This strain of bacteria is effective against Japanese beetles and some other types of beetles but not harmful to other wildlife, beneficial bugs, people or pets.

Learn how to get rid of slugs and snails in the garden.

As always, read and follow label instructions for any organic, natural or synthetic products you apply to the garden.

Next, try these natural ways to eliminate garden insect pests.

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Melinda Myers
Melinda Myers is a nature and gardening writer whose specialty is attracting wildlife, especially birds, to the garden. She contributes regularly to the magazine Birds & Blooms, and lectures widely on creating gardens that please both human and avian visitors.