Project Happy Apples

The OSU Extension Service in Central Oregon has a program to assist local residents with control of codling moth. Informative timely emails are sent out to interested residents with advice on when and how to treat fruit trees to reduce or prevent infestation.  If you would like to be added to the contact list to get this information, click here.

Timely Tips for Fruit Tree Growers

Update 1 - March 30, 2017 Information

Update 2 - April 25, 2017 Information

Update 3 - May 18, 2017 Information

Update 4 - May 25, 2017 Information

Update 5 - July 27, 2017 Information

Host Plants

Primary: Apple, Pear (once it starts to soften)

Sometimes: Large-fruited Hawthorn, quince, prune and walnut

Rarely: Peaches, Apricot and Cherry (this occurs only where heavy infestations of apple or pear are near)

Life Cycle of Codling Moth



Additional Resources


Please check back as this site will be updated with more information soon!


Amy Jo Detweiler, Associate Professor
OSU Horticulture Faculty for Central Oregon
Telephone: 541-548-6088 X 7951
Email: Amy Jo Detweiler

Deschutes County Extension Service
Oregon State University
3893 SW Airport Way
Redmond, Oregon 97756-8697
Telephone: 541-548-6088
Fax: 541-548-8919

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