Apple Tree Bark Peeling: Normal Aging or Pest Problem?

Peeling bark on apple trees over 10 years old is often normal. However, it can also signal insect infestation or disease. A proactive spray program is essential for tree health, especially in wet climates where fungal spores thrive.

Recommended Spray Schedule

1. Late winter/early spring: Apply dormant oil just before bud break to smother overwintering pests.
2. After petal fall: Spray a combined fungicide/insecticide (horticultural spray) every two weeks through the growing season.
3. During wet periods: Maintain schedule rigorously to prevent fungal outbreaks.

Consistent protection prevents borers, aphids, codling moth, and diseases like apple scab. For specific product recommendations, consult your local extension office.