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
- We have a 3 year old maple tree that seemed to be doing great, but never lost it's leaves last fall. It showed no sign of life this spring and we were ready to replace it. A week or so ago it started sending out leaves at it's crotch. I'm pretty sure the top of the tree is dead. Do we cut it down to it's crotch (losing at least 8 feet of branches)? Will it regain a shape and will it be strong enough to survive the wind? What should we do with this tree?!
- I have a very large, beautiful Cottonwood tree on my property, that is near the property line with my neighbor. She wants to put in a new fence, because the tree has been pushing up the posts for her old fence. The fencing company has said that they can put in a new fence, but they will have to "shave off" a bit of the tree trunk and possibly some of the root near the surface of the ground. I am worried that something like that could lead to the tree getting sick or dying. I want to keep peace among neighbors, but it would be a disaster and very expensive to lose the tree because of something likethis. Can you please tell me if a Cottonwood tree is hardy enough to withstand such a "shaving" procedure?
- When should I be pruning my roses?
- How do I keep my lawn green during the hot summer months?
- Is it workable to grow scrub oak from acorns, and if so, I'd appreciate direction. I live near Foothill Drive in SLC.
- Leaves on my maple tree have turned yellow, but the veins are green. Is this an iron problem?
- What is West Nile Virus and how can I keep myself safe from it?
- I am wondering if I have some sort of fungus in my lawn.