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, please email Carrie Smith.  

Timely tips for fruit tree growers 

Update 1 - April 10, 2018

Update 2 - April 25, 2018

Update 3 - May 8, 2018

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


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