what kills flea beetles
Adult flea beetles become active in early spring. But they’re all potentially disastrous for your crops—if left unchecked, they can destroy the roots and foliage of a variety of plants in no time. Plant crops as late as possible. This will disrupt and illuminate any overwintering flea beetles. Use row covers or other screening to keep beetles out, when the seedlings are growing. Depending on the species, females lay single or clusters of eggs in small holes, in roots, soil or leaves of many vegetables as well as occasionally on flowers and ornamental shrubs and trees. Prevent severe damage to your plants by treating seedlings when there are more than five flea beetles per plant. Plants started from seeds are less tolerant of feeding damage compared to transplants, but both can be severely injured if flea beetle numbers are high. This homemade insecticidal soap spray will kill the adults on contact. Cultural control is the key to killing flea beetles. The University of Minnesota is an equal opportunity educator and employer. But if yours are or if you just don’t have the time for less invasive treatments, pesticides are an effective option. Extension is expanding its online education and resources to adapt to COVID-19 restrictions. Remove old crop debris so that beetles will not be able to get protection in the winter. These eggs take roughly a week to hatch, at which … Below are names of active ingredients that are commonly available in pesticides sold in stores that sell garden pesticides: CAUTION: Mention of a pesticide or use of a pesticide label is for educational purposes only. They’re most dangerous early in the season, as mature plants are better equipped to survive an infestation. They create shallow pits and small rounded, irregular holes (usually less than 1/8th inch) in the leaves. Flea beetles chew irregular holes in the leaves. University of Minnesota Extension discovers science-based solutions, delivers practical education, and engages Minnesotans to build a better future. Flea beetles, or Alticini in scientific terms, are pesky, shiny little beetles that come in a variety of colors. Flea beetles are most damaging in spring. Flea beetles are common pests found on many vegetable crops including radishes, broccoli, cabbage, turnips, eggplant, peppers, tomatoes, potatoes, spinach and melons. As with many pests, soap is poisonous to flea beetles, so spraying a soap and water solution (often called insecticidal soap) on your plants can help control flea beetle populations. It is generally not necessary to treat flea beetles during summer, especially at the end of the season. There are plenty of ways to combat flea beetles that don’t involve pesticides. Flea beetles are a type of leaf beetle in the family Chrysomelidae. Severe flea beetle damage can result in wilted or stunted plants. The most common flea beetles in Minnesota gardens are: Most flea beetles feed on very specific plants, but the palestriped flea beetle (Systena blanda) feeds on a variety of plants, like, squash, beans, corn, sunflowers, lettuce, potatoes and many weeds. They can ruin a young crop in large numbers. Insecticides may be used early in the season, but are generally unnecessary in the control of flea … Organic insecticidal sprays, powders, or drenches may be purchased to help combat flea beetles in your garden such as: insecticidal soaps pyrethrins sabadilla neem oil (registered for food crops) diatomaceous earth spinosad However, they are often shiny, and if their behavior fits their name, you probably have flea beetles. You can also companion plant to deter flea beetles, which tends to be a more successful approach. An exception is the spinach flea beetle, which is 1/4-inch long. Yes, they hop—or flee—like fleas when disturbed. Adult flea beetles will be attracted to the tallest, earliest crops available. Outdoor biting insects and insect relatives. Dust your plants with it (it’s safe for humans) or sprinkle it around your plants to control or eliminate flea beetle populations. The larvae usually cause little to no damage to the plants (with the exception of potato flea beetle larvae). Most adult flea beetles are very small (1/16 –1/8th inch long). Hutchison, Extension entomologist and Rebecca Hines. The best way to identify the source of your plant woes is a flea beetle is to examine the damage to the leaves of your plant. Visit The Home Depot to buy Ortho 32 oz. Be sure that the vegetable you wish to treat is listed on the label of the pesticide you intend to use. There is a very wide diversity of beetles that are considered to be flea beetles.
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