79a65697_ow_in_Minnesota__Minnesota_DNR__Pest_or_Condition
[Trees] Many hard-woods [Recommendations] Spray these leaf feeders when observed with labeled insecticides. Bt is preferred. [Pest or Condition] 
Cankerworms
Forest Insect and Disease Newsletter: 5/99: Helping trees grow in Minnesota: Minnesota DNR
Pest or Condition