Planting “flea beetle traps”, or their favorite crops, can be a bit risky: done right, they can keep the flea beetles away from your favorite crops by sacrificing your deterrent plants. The number of adult flea beetles also goes down at that time. Plant a highly-favored crop, such as radish, as a trap crop, before you plant your main crop. Hutchison, Extension entomologist and Rebecca Hines.

Insecticidal soaps work well to kill flea beetles on your plants.

Types of Flea Beetles. These diagnostic tools will guide you step-by-step through diagnosing a plant problem or identifying a weed or insect. Use row covers or other screening to keep beetles out, when the seedlings are growing. They can ruin a young crop in large numbers.

Flea beetles chew irregular holes in the leaves. Plant crops as late as possible. Be sure that the vegetable you wish to treat is listed on the label of the pesticide you intend to use. Of course, spotting a flea beetle is another fool-proof sign. Bug B Gon MAX Lawn & Garden Insect Killer Concentrate 0175810 The best way to save your crop from these creepy-crawly pests is to deter them from invading in the first place. Cover your plants.

But the worst part about flea beetles is that they often carry diseases, which they spread to the plants they eat. If so, chances are good that you have a flea beetle problem. Plants grow faster in warmer temperatures and are more stable to resist damage from flea beetles.

This homemade insecticidal soap spray will kill the adults on contact. Are the holes in the leaves circular? In that case, it’s time for damage control. Microctonus vittatae is a native braconid wasp (found more commonly in the eastern half of the U.S). Place yellow sticky traps in your garden to see if you have flea beetles. Once beetles are actively feeding on the trap crop, spray with a labeled pesticide. 2020 Dust your plants with it (it’s safe for humans) or sprinkle it around your plants to control or eliminate flea beetle populations. © But if yours are or if you just don’t have the time for less invasive treatments, pesticides are an effective option. Adult flea beetles become active in early spring. However, it … Remove old crop debris so that beetles will not be able to get protection in the winter. Flea beetles are more than just hole-boring pests. 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 The larvae usually cause little to no damage to the plants (with the exception of potato flea beetle larvae). If your flea beetle population is small and more pesky than destructive, try using sticky traps. Flea beetles are best managed through a combination of nonchemical and pesticide methods. Control weeds in and around planting sites to limit food sources for flea beetles. The University of Minnesota is an equal opportunity educator and employer. This type of damage is unique to flea beetles. All flea beetles have large back legs which they use for jumping, especially when disturbed. Small white larvae hatch from eggs and feed on the roots of the newly planted seedlings. But the worst part about flea beetles is that they often carry diseases, which they spread to the plants they … Cole crops (cabbage, broccoli and cauliflower) and other plants with edible greens can be damaged later in the summer.

There is a very wide diversity of beetles that are considered to be flea beetles. … 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. Adult flea beetles will be attracted to the tallest, earliest crops available. They create shallow pits and small rounded, irregular holes (usually less than 1/8th inch) in the leaves. Adult flea beetles cause the most damage by feeding on the leaves and stems. You can also companion plant to deter flea beetles, which tends to be a more successful approach. Flea beetles chew irregular holes in the leaves. Most adult flea beetles are very small (1/16 –1/8th inch long). An exception is the spinach flea beetle, which is 1/4-inch long. If the damage is in an advanced stage, do the holes create a “lacey” appearance in the leaves? That said, if you want to lure the flea beetles away from your plants, try: With any luck, they’ll be so occupied with those plants that they forget about your focal crops, like greens and potatoes. Blight and other bacterial plant plagues often begin with unwanted beetle visitors, so combatting these pests as swiftly as possible is important. Flea beetles are most damaging in spring. Spraying plant leaves with neem oil can get rid of flea beetles and discourage them from feeding on the leaves. Flea beetles … Soapy water will kill flea beetles on contact. They can ruin a young crop in large numbers. 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. Outdoor biting insects and insect relatives. This wasp kills the adult flea beetle.

Flea beetles are more than just hole-boring pests. Jeffrey Hahn, Extension entomologist; Suzanne Wold-Burkness, College of Food, Agriculture and Natural Resource Sciences; W.D. These eggs take roughly a week to hatch, at which … 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.

Check your plants for flea beetles and their damage. Generally, flea beetles aren’t so unbeatable that they require heavy-duty pesticides to defeat. How to Kill Flea Beetles Naturally.