While it may seem amazing, there are actually plants Japanese beetles avoid. These are all questions that gardeners have during the peak of the growing season when Japanese beetles wreck havoc on gardens, orchards and flowerbeds across the U.S. Japanese beetles (Popilla japonica) are a pest insect. The adult Japanese beetles that eat so many plants are about 3/8-inch long, with a shiny, metallic green body and copper-brown wing covers. before they become overripe or begin to rot will also decrease the number of beetles that you attract to your organic garden. You can also try to make your own homemade insecticide. They feed on roots of grasses and garden plants. The spray will treat 1,000 square feet and create a feast for your backyard birds. Be careful when using neem oil or sprays with potassium bicarbonate around water. Japanese beetles can be frustrating, but they do not have to ruin a garden. I decided to try and use that to my advantage. Shake the plant to make the beetles fall off and onto the cloth. Some of the plants that deter Japanese Beetles are: Catnip; Larkspur; Onions; Leeks; Chives; GarlicWhite Chrysanthemum; White Geraniums; Marigolds; Tansy Put it down early in the morning when the beetles are most active. Learn more about the types of cookies we use by reviewing our updated Privacy Policy. They can feed on more than 300 species of plants, and also are vociferous eaters. The more beetles you have, the more you are likely to get. Squishing them is an option for those of us who feel more aggressive towards them. It’s no wonder a question commonly asked of pest management professionals is, ‟Will Japanese beetles kill my tree?” It depends. What do Japanese beetles eat? A sure sign of a Japanese beetles is the way that they eat the leaves. Careful planting of plants that deter Japanese beetles or plants that don’t attract Japanese beetles can help you to have a more beetle free yard. The shiny adult Japanese beetles are most active for 6-8 weeks in early to mid-summer. Unfortunately, it’s hard to eliminate Japanese beetles entirely, but there are some ways that you can help to control your population. First introduced in New Jersey, this invasive beetle has now spread north to Ontario and Minnesota, west to Arkansas, Iowa and Missouri and south to Alabama and Georgia. Japanese beetles love to eat the foliage of the plants. They can feed on more than 300 species of plants, and also are vociferous eaters. Your email address will not be published. Put beetles into a bucket of soapy water to drown them. Vegetables play a prominent role in not only salads and side dishes, but soups, main courses, and even desserts. Need help? It can also be an expensive treatment as all soil within 5/8 of a mile should be treated for maximum effectiveness. Unfortunately, their efforts were unsuccessful and the beetles have spread widely. We can use our knowledge about Japanese beetles and their habits to beat them at their own game. You can attract native species of Tiphia vernalis or Tiphia popilliavora. Japanese beetles are very mobile and can infest new areas from several miles away. This is why Japanese beetles can be devastating to farmers. However, they prefer to attack the larvae and can’t be used to control the entire population. Remove row covers temporarily if the crops need to be pollinated. You can spray this on your lawn as much as once per week. According to the University of Kentucky Cooperative Extension Service, "When you remove beetles daily by hand from a plant, only about half as many are attracted to that plant compared to those on which beetles are allowed to accumulate." Then pick up the beetles and drop them into soapy water. If the evidence of an infestation is found in the early stages, trees and plants can be saved with the proper care. In Japan, the Japanese beetles are kept in check by natural predators. When the beetles grow in population, they will completely strip the plant off its foliage and make it look bare. If you don’t want to use nematodes, parasitic wasps or milky spore to control the grubs of Japanese beetles, you still have options. This further decreases the amount of beetles that will migrate to your organic garden. By the end of their annual reign, they have laid their eggs and the grubs have hatched and have begun feeding. Place the fermented can of fruit cocktail on a brick or wood block in a light colored pail or small bucket. Strawberries and eggplants are two of the many garden crops that Japanese beetles are attracted to. The Eastern and Midwestern portions of the U.S. have to deal with Japanese beetles every summer. These controls can often be purchased in garden centers or through mail-order bio-control catalogs. It is devastating if you own plants Japanese beetles attack to watch a beloved plant devoured in a matter of days by these hungry and creepy bugs. Your email address will not be published. Grubs are white colored with tan or brown heads. These attractant chemicals will also attract other insects. Should I use pheromone "Bag a Bug" traps to combat Japanese beetles? Japanese beetles will eat just about anything that they can. The soil can be covered in these nematodes when the grubs are small. They ingest the spray and pass it onto their eggs. Japanese beetles are voracious eaters and can completely decimate a garden if left to their own devices. This can ultimately lead to unsightly lawns and, far worse, inedible fruits and vegetables. Both the adult and larval (grub) stages of this beetle cause damage, so it’s important to know what each looks like. The blooms contain a chemical that makes the beetles dizzy and causes them to fall off. They even eat turf grass. They emerge as adults the following June when they will start the cycle over again. The spray then kills the larvae before they can reach adulthood. Japanese Beetles are a ferocious feeder than can decimate a garden in no time.