Spotted cucumber beetle

Chewing pests

Adult spotted cucumber beetles chew holes in plant leaves and flowers. They commonly feed on pollen. Although adults typically cause minimal damage, large populations may significantly damage plants, particularly those in the sunflower family, including chrysanthemum, coreopsis and dahlia. The adults overwinter in plant debris.

spotted cucumber beetle adult
Adults are 6 mm long and yellow-green with a small black head. There are typically 12 black spots on the hard wing covers.


In early spring, cover plants with a row cover until blooming starts. Remove and discard any plant debris. Contact insecticides may be used to control the adults.

Print a PDF of this page: Spotted cucumber beetle.

Back to IPM scouting in herbaceous perennials.

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.