What is being done to prevent the spread of japanese beetles?

  • The NDDA has placed monitoring traps at each of these nurseries who received stock from Bailey Nurseries.
  • The NDDA has nearly 1,500 traps placed across the state in every county with cooperation from NDSU Extension Service, Master Gardeners and volunteers.
  • The NDDA plans to work with Baileys for the next three years to ensure that Japanese beetles do not become an established pest in North Dakota.
  • The NDDA is requiring any infested stock in stores be removed from the sales floor and bagged. Bailey Nurseries will then collect and destroy the infested stock.
  • The NDDA and the nurseries will be monitoring traps throughout the summer and in years to come.
  • Homeowners, property owners and those who believe they may have bought nursery stock affected by Japanese beetle infestation this spring are asked to monitor their stock for the pests.
  • The public is asked to monitor nursery stock properly, and can purchase traps at retail stores for $4 to $10.
  • If the public find Japanese beetle, they should contact the NDDA Plant Industries Bismarck Division at 701-328-2232.

Read more about integrated pest management of the Japanese Beetle here

Treating for Japanese Beetles

  • The following pesticides are two options recommended by Bailey Nurseries that can be used by North Dakota nurseries or retail chains to kill Japanese beetles through drench application. A nursery or retail chain may work with a supplier of Bailey Nursery products to determine if it needs to treat its nursery stock.
    • Marathon II
      • Personal Protective Equipment is required. Long-sleeve shirts and pants, chemical-resistant gloves and shoes plus socks
      • 1.7 fluid ounces per 100 gallons of water.
      • Do not re-enter applied area for 12 hours after treatment.
      • Don’t spray when bees are present or within 24 hours of rain.
    • Talstar Select
      • This is a Restricted Use Pesticide, which requires pesticide applicator certification for purchase and use.
      • Personal Protective Equipment is required. Coveralls, chemical-resistant gloves and shoes plus socks.
      • 40 fluid ounces per 100 gallons of water.
      • Do not re-enter applied area for 12 hours after treatment.
      • Don’t spray when bees are present or within 24 hours of rain.


  • What can the public do to spray for Japanese beetle?
    • Purchase a pesticide product labeled for treatment of Japanese beetle infestation.
    • Products should have bifenthrin, imidacloprid or permethrin as active ingredients. These are three common pesticide main ingredients known to effectively kill Japanese beetles. However, products with other main ingredients are available and have been proven effective.
      • Always read the label before making the application and follow the exact directions for application rates.
      • Do not apply when people, pets, bees or other desired insects are in the treatment area.
      • Once the application is complete, do not re-enter the applied area for 12 hours after treatment unless otherwise specified on the product label.
      • Keep safe by wearing the correct protective equipment. This equipment typically includes either long sleeves and pants or coveralls, shoes with socks, chemical-resistant gloves that can be purchased at chemical retailers or at chain retail stores.
      • Additionally, application of these pesticides may require eye protection.
    • To search for products that can be used to kill Japanese beetle, visit http://www.kellysolutions.com/nd/searchmulti.asp
      • In the “Enter/select a Pest” text box, type “Japanese Beetle”.
      • In the “Select Formulation” drop-down menu, selecting “Insecticide” will concise options.
      • In the “Select Formulation” text box, selecting “Emulsifiable Concentrate” gives multiple viable options.
      • Click on the “Search for Products that Exactly Match All these Criteria” button.
      • Each product listed is clickable and provides details

Japanese Beetle Facts

  • Native of Japan first discovered in U.S. in 1916 and now established nearly every state east of the Mississippi River.
  • Heavy defoliator of a broad range of host material including corn, soybeans, ornamentals, trees, and shrubs especially roses and lindens.
  • Half-inch long adults are metallic green with bronze wing covers.
  • Adults begin to emerge mid-June thru September, females lay up to 60 eggs in 2-month lifespan. Eggs hatch in two weeks, larva (1-inch long) feed on plant roots in the soil, overwinter as larva below the frostline.
  • Japanese beetle trapping has been ongoing in ND since 1960. Have been caught in ND (mostly at nurseries) since 2012.
  • There are established populations in parts of Minnesota, South Dakota, and Montana.

Japanese Beetle Prevention Information Contacts

Japanese Beetle Hotline

701-328-2232 ndda@nd.gov