1st year apple trees/scab? - Ask Extension
I planted two apple trees in my front yard this spring that were fairly mature from Sargent. I have a Zestar and Honeycrisp. I believe I have a case o...
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1st year apple trees/scab? #877398
Asked July 15, 2024, 9:40 PM EDT
I planted two apple trees in my front yard this spring that were fairly mature from Sargent. I have a Zestar and Honeycrisp. I believe I have a case of apple scab. The new leaves are curling, yellow, with black splotches on the backs of the leaves. The zestar has large bumps on the leaves. I picked off all the blooms to allow the plant to establish this year so I don’t have any fruit. I was reading that I should treat with fungicide but seemed to be only a spring application. I am only noticing now mid summer-is there anything I should do to control the spread at this stage?
Thank you!
Courtney
Olmsted County Minnesota
Expert Response
Fungal diseases are very common this year because it has been so wet.
https://extension.umn.edu/plant-diseases/apple-scab#:~:text=If%20scab%20has%20been%20a,all%20leaf%20and%20fruit%20tissue.
https://hort.extension.wisc.edu/articles/applescab/
Mulching under your trees in the spring will also help to reduce apple scab because it helps reduce the number of spores from getting to the tree. I can never get up, all the leaves that are part of the problem.
Once your trees start producing fruit bagging apples can work well to get unblemished fruit.
https://hort.extension.wisc.edu/articles/bagging-apples-for-insect-and-disease-control/
https://extension.umn.edu/fruit/growing-apples
https://extension.umn.edu/plant-diseases/apple-scab#:~:text=If%20scab%20has%20been%20a,all%20leaf%20and%20fruit%20tissue.
https://hort.extension.wisc.edu/articles/applescab/
Mulching under your trees in the spring will also help to reduce apple scab because it helps reduce the number of spores from getting to the tree. I can never get up, all the leaves that are part of the problem.
Once your trees start producing fruit bagging apples can work well to get unblemished fruit.
https://hort.extension.wisc.edu/articles/bagging-apples-for-insect-and-disease-control/
https://extension.umn.edu/fruit/growing-apples
