Codling Moth Larvae
can tunnel into apples, pears, and walnuts, leaving entry holes, frass, internal feeding damage, and premature fruit drop. Effective management begins before larvae enter fruit and combines several compatible tactics rather than relying on one product.

1. Confirm codling moth
Inspect damaged fruit and compare symptoms with reliable local pest guidance. Other insects and disorders can cause holes, decay, or premature drop. Identification matters because controls and timing are pest-specific.
2. Monitor adult flight
Pheromone traps are primarily monitoring tools. Install and service them according to their directions, record catches consistently, and use a compatible local degree-day model or Cooperative Extension forecast to estimate egg hatch.

3. Remove sources of larvae
Collect infested and fallen fruit frequently and manage it so larvae cannot complete development. Remove leftover fruit after harvest and reduce sheltered pupation sites where practical without damaging healthy bark.
4. Protect individual fruit
Fruit bags or barriers can be practical in small orchards. Apply them at the crop stage and in the manner directed for the barrier, after thinning and after confirming fruit is not already damaged.
5. Consider mating disruption at the right scale
Mating-disruption products differ from monitoring traps. Their performance depends on labeled placement density, timing, orchard size, surrounding populations, and maintaining the dispenser pattern. Use only as directed.
6. Time any biological or insecticidal treatment
Once larvae enter fruit, surface treatments have limited reach. If monitoring and local models justify treatment, select a product labeled for the crop and codling moth and follow every direction for rate, timing, interval, protective equipment, harvest restriction, resistance management, and environmental safety.
Protect pollinators: avoid applications to open bloom or when bees are foraging unless the label specifically permits the use and all precautions are met. Prevent drift and runoff.
Build a season-long record
Record trap catches, weather model dates, fruit damage, sanitation, treatments, and harvest results. Codling moth can have more than one generation where the season is long enough, so continue monitoring rather than assuming the first flight is the only risk.
Learn about the codling moth life cycle and generations, see the CpGV biological-control guide, or watch the codling moth control video.
Compare orchard tools
Shop codling moth traps, lures, fruit barriers, mating disruption, and labeled controls.
Related Pest Control Resources
- What Is Integrated Pest Management (IPM)?
- Shop Insect Control products
- Browse Pest Control & Beneficial Insects collections
- Use the Pest Control Solution Chart
- Choosing the Right Apple Tree fruit-tree guide
Identify the pest or disease first. For pesticides, repellents, traps, and biological controls, confirm that the product label covers the target site and pest, then follow all label directions and precautions.




2 comments
Eduardo, it is hard to diagnose what is causing the problem. You might be better off taking a sample of the leaves to a local nursery or Ag Extension office and see if they can diagnose the problem. Codling moths attack the fruit and not the leaves. Most likely a problem with the tree’s nutrition.
Hello! I have a small apple tree (I planted it 3 years ago) and most of the leaves seem to be sick. Is there something I can do or buy to help it?/Users/eduardohernandez/Desktop/IMG_7273.jpeg