We're seeing the same problem with lovely paper birch trees and the birch borer in the northwest http://oregonstate.edu/dept/nurspest/bronze_birch_borer.htm htt

We're seeing the same problem with lovely paper birch trees and the birch borer in the northwest http://oregonstate.edu/dept/nurspest/bronze_birch_borer.htm http://oregonstate.edu/dept/nurspest/bronze_birch_borer.htm