Honey locust: Locust borer
revision date: 2022-11-23 12:51
Black locust (Robinia pseudoacacia) may be infested by the larvae of a boring beetle. Eggs laid in the fall on the bark hatch into larvae which burrow beneath the bark and feed. Symptoms of feeding include swollen, discolored, or oozing patches of bark. Openings in the bark are also present, and piles of debris drop to the ground beneath the openings. The adult is a longhorned beetle about 1/2″-3/4″ in length. It is black with yellow markings.
Use Integrated Pest Management (IPM) for successful plant problem management.
Select non-chemical management options as your first choice!
- Provide proper culture. Stressed or weakened trees are much more likely to be infested by borers.
- Avoid injuring plants.
IMPORTANT: Visit Home and Garden Fact Sheets for more information on using pesticides.
- None recommended