Japanese beetle
PestMetallic green/bronze adults feed in groups; larvae are white grubs in turf.
Often on
Grapes, roses, beans, many trees and shrubs where the beetle is established.
Symptom tags
Signs in the garden
- Leaves eaten between veins (skeletonization).
- Clusters feeding openly in daytime.
What often helps (general)
- Knock adults into soapy water in morning when less flighty.
- Netting for high-value small plantings.
- Avoid pheromone traps that pull more beetles into the yard than they catch.
When to escalate
Regional programs and quarantines vary; extension can advise on legal tools and timing in your county.