Codling Moth (CM) causes wormy apples and pears in Box Elder County. 
In the chart below is the recommeded spray period for codling moth larvae for different areas of Box Elder County. It is critical to maintain some sort of control program from the projected beginning spray date until the end of the spray period.
Backyard home orchards can find various control options by clicking on the Home Orchard Pest Management Guide link found under the FRUIT TREE PRODUCTION link. It is important for homeowners to read and follow the product label to keep your fruit worm free from this pest.
More information about codling moths can be found by clicking on the following fact sheets. FACT SHEET #1 and FACT SHEET #2. If you have questions, please call the Utah State University Extension Office at 435-695-2542.
Current as of 8/6/12
Willard, Brigham City and Perry areas will be finished with 2nd generation egg hatch on August 8. The third generation will start to hatch on August 10. Growers should keep their pears and apples covered from August 10 until Sept 15 when we will be finished with Codling Moth for the year.
Tremonton area will need to keep their trees sprayed until August 19 for the end of the second generation. The third generation will start to hatch on August 22nd and resident should keep the apples and pear covered until September 15.
Willard, Brigham City and Perry areas will be finished with 2nd generation egg hatch on August 8. The third generation will start to hatch on August 10. Growers should keep their pears and apples covered from August 10 until Sept 15 when we will be finished with Codling Moth for the year.
Tremonton area will need to keep their trees sprayed until August 19 for the end of the second generation. The third generation will start to hatch on August 22nd and resident should keep the apples and pear covered until September 15.