Ash plant bug
Injury from ash plant bug can be seen on leaves of ash trees. They overwinter as eggs under the bark of ash trees and hatch around the time redbud is in flower. There are two generations per year. Second generation nymphs continue to feed on the lower leaf surface. There is a characteristic green heart-shaped mark inside of a triangular structure in the middle of the insect’s back. Adult ash plant bugs are about ¼ inch long with green and brown markings.
Treatment is rarely needed as lasting damage to the trees rarely results from ash plant bug feeding.
Print a PDF of this page: Ash plant bug.
The MSU IPM Program maintains this site as an access point to pest management information at MSU. The IPM Program is administered within the Department of Entomology, fueled by research from the AgBioResearch, delivered to citizens through MSU Extension, and proud to be a part of Project GREEEN.