Japanese Beetles - Knowledgebase Question

Indian Land, So
Question by jelting2
June 25, 2009
What is the best way to gid rid of these beetles? I just purchased some Sevin concentrate and plan on spraying all of my ornamental flowers. How often will I need to do that?


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Answer from NGA
June 25, 2009

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Japanese beetles are really difficult to control. Carbaryl (in Sevin) can be used to kill the beetles, but it will also kill beneficial insects such as honeybees so use it with caution. Some gardeners have had success using a spray containing neem to repel Japanese Beetles. It has a residual effect so you don't have to spray as often. You can also try handpicking the pests early and late in the day when they are resting on the leaves. Sometimes treating them at the grub stage using milky spore or beneficial nematodes can also help over a several year time span. I'm sorry there is no magic bullet where this pest is concerned. If you decide to use pesticides Be sure to read the label and apply according to directions.

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