Japanese Beetle Information
Idaho State Department of Agriculture Japanese Beetle Web Page (current information)
Though not new to the United States, the Japanese Beetle has never been found in Boise...until 2012. This highly destructive plant pest that can be very difficult and expensive to control. Feeding on grass roots, Japanese beetle grubs damage lawns, golf courses, and parks. Japanese beetle adultsattack the foliage, flowers, or fruits of more than 300 different ornamental and agricultural plants. It is not a native insect to the USA, but was introduced to the eastern US many years ago, probably in a shipment of bulbs from Japan. Unfortunately, it has now made it's way into Boise, via some nursery stock from back east. Boise Parks and Recreation is assisting the Idaho State Department of Agriculture in an effort to eradicate the insect from Idaho. Eradication means eliminating it altogether, which can be time consuming.
Boise Parks and Recreation is working with Idaho State Department of Agriculture (ISDA) in efforts to eradicate Japanese Beetles from parks where adults have been captured. A new season of intensive treatment began in May 2017. You can read more about affected areas of Boise and the eradication efforts at the ISDA Website about Japanese Beetle. A series of frequently asked questions (FAQs) are available on that website and in the link below. Currently, the insect is present in parts of east Boise, a smaller area off State Street, and in areas of Boise State University campus. Numbers of the insect have been severely diminished thanks to efforts by all partners.
The eradication effort is not over. It may take several years to completely eliminate the pest. Allowing it to gain a permanent foothold could mean millions or billions in damages to landscape plants and the nursery industry and increased use of pesticides. Please continue to visit this web page for updated information and maps.