Find out if you are in our Japanese beetle treatment area for 2026 with our searchable map!

Japanese beetle (Popillia japonica) is a destructive, invasive insect that feeds on over 300 plants. Adults skeletonize leaves and damage buds, flowers, and fruit. Grubs (larvae) are found in the soil and eat grass and other roots. It is a serious pest for both residents and the agriculture industry in the Eastern U.S. where it is established. 
If Japanese beetle were to establish in Washington, it would pose a serious threat to gardens, parks, and farms. Quarantines can start which make it difficult and expensive to move agricultural and nursery products. Together, WSDA, community members, landowners, and growers can protect Washington and support the ongoing eradication project. 

Want to stay informed about WSDA's Japanese beetle project? Join our email or Facebook group to receive updates about the project and connect with others who are also interested.