Hi, we are located in Normandy Park, WA and this year we noticed there black and yellow golden beetles all over the place, we are surrounding the trees and worry about if these beetles would do some damage to the trees, and what should we do? thank you!
Certified GKH Gardening Expert
My preferred method is using biological warfare!!! Bt (Bacillus thuringiensis) is a type of bacteria that will kill insect larva of all types. It is not considered harmful to humans, but will desecrate pest problems, fast.
This article will help to explain how to use Bt:
This article will offer more means of control for Japanese beetles: