Ask a Question
Notify Me On Question Update
Email this Question
What is causing the holes in my peach and cherry trees?
Rate This FAQ
It sounds like the disease is shot-hole, or Coryneum blight (Wilsonomyces carpophilus). This fungus attacks apricots, peaches and nectarines. Classic symptoms include gummy resin-like material on buds and stems that have been infected. The leaves develop red spots or initial infections that expand into lesions. Eventually, the lesions abscise and fall out creating a shot hole appearance, which is what you are seeing. Lesions can form on buds, stems, and fruit. This pathogen spreads in moist wet conditions.
Homeowner control of this disease is primarily based on cultural management. Prune out all diseased wood in early spring. Continue pruning visible infections during the growing season, but only when the weather is dry to prevent spread. Use a 10% bleach solution to disinfest the pruners after each cut. Remove all infected branches from the property. This will reduce the amount of spores available for infection. Irrigate at ground level to avoid wetting the leaves and branches. This helps to reduce the spread of spores. Limit the amount of nitrogen applied to the tree. Rapid growth promotes fungal development.
If necessary, captan is a contact fungicide that is available for homeowners and can be applied during the growing season starting in spring. Multiple applications may be necessary. Read the label carefully for application instructions.
Submit Your Suggestion
Other Questions In This Topic
- How do I prune my roses?
- I have 30 acres of dry farm high on the west side of cache valley and would like like to cover it with many trees that are likely to survive and will eventually provide shade. What should I plant?
- Why do lilacs do so well?
- We have thousands of little green worms/caterpillars hanging from webs in our trees, eating the leaves til they are bare. What can we do to get rid of them?
- What is killing all the scrub oak and where can I find information on how to save the scrub oak I have that has not been affected by it yet?
- My euonymus has a white powdery film on the leaves, what is it?
- Reveille grass seed. How good is this type of seed for the West Jordan area(Oquirrh shadows area)?
- I live in South Jordan. 4 1/2 years ago I started watering my yard with gray water (irrigation) due to the cost of water. Since that time I have lost 6 red twig dogwoods, 7 blue arctic willows,3 spireas, a pine tree and a Japanese maple. Everything else does not look good (other trees, bushes and perennials). In the spring it all starts out green but by June everything has brown edges on yellowing leaves and the trees have several dead branches. Could the gray water be the culprit? Everything was at least 6 years old, lush, and healthy until I changed my water. I am afraid I will lose everything else this summer if I don't find a cure for this. I could you use some answers. Thank you.