Ask a Question
Notify Me On Question Update
Email this Question
Apricots and peaches--what causes the reddish or purple-brown spots on new leaves, buds, shoots and fruit?
Rate This FAQ
It is called Coryneum Blight or "shot hole" disease. It is a fungus that infests during cool, wet springs. It first forms dark spots with brown centers on the leaves. These centers eventually fall out, leaving a "shot-hole" appearance. The fruit has rough, corky blemishes with a red ring around the spot. Control includes: keeping leaves and fruit dry from sprinkler spray, proper pruning, maintaining good tree vigor and a fall clean up of debris around the base of the tree. A fungicide maybe applied in the fall after all the leaves have fallen, again in the spring at pink bud stage, full bloom and when leaves begin to appear.
Reference: “Coryneum Blight of Stone Fruits”, at http://extension.usu.edu/plantpath/fruit_diseases/fd_coryneum_blight.htm
Submit Your Suggestion
Other Questions In This Topic
- Is there a variety of Nectarine which will grow well here in northern Utah? Can I grow just one tree? Is it okay to grow it near a peach tree or will they cross-pollinate and cause problems? Do they have the same risk of disease as peaches do?
- We live in Herriman and have a 25 x 30 foot plot of land that we would like to turn into an orchard. We would like to plant a variety of apples, pears, plums, and peaches. When should we plant? What kinds should we plant? How many of each should we plant? We are total beginners! Are there books or other resources you would recommend to help us that give answers for our specific area?
- I have a 6year old dwarf braeburn apple tree. It has gotten very tall and a large part of the tree split off in a windstorm. I need to prune it back and am wondering when I can safely do so.
- We have a horrible locust infestation, which I can't find any news about - all of the scrub oak are defoliated. Is this common? Will the trees recover- new leaves this year? I have found them on fruit trees and washed them off - are they just passing through? Any other info on them?
- I seem to have terrible luck with cherry trees. I have 2 questions. first, Since they have taken away Diazinon as a root borer killer, how do I manage root borer? Second, I live in the city and have irrigation water going to my yard and garden. How do I water them. I'm afraid one tree, that sits to the back of my garden is getting a lot of water when I flood my tomatoes. Do they not like flooding. How can I protect this tree? How should I water my other cherry trees planted away from my veg garden. I got two montmaurancy trees last year and they both died. I love cherry trees and I need HELP
- I have a bartlett pear tree. A Limb is almost black, but growth was still coming out of the ends, so i didn't prune it off the tree all the way in the spring. Now other parts of the tree are turning black, some of the leaves are curling and turning black as well as some of the fruit. Can I save the tree, or do I need to pull it out. Also will this spread to my other two nearby peach and apple tree.
- I need to buy some tree spacers to reshape my fruit trees. Where can I buy tree spacers?
- We have five acreas in Cedar City and would like to plant some nut trees. Can you suggest some types/varieties that would do well here? Would any work or only some?