What trees are at risk?
Apple, Crab Apple, Pear, Hawthorn, Serviceberry and other fruit trees. What should I look for? Yellowish-orange colored lesions on the leaf, developing into darker spots in advanced stages. The infected leaves drop from the tree prematurely in the summer. Also look for lesions appearing on fruit later in the season. How does this harm my tree? Because the infected leaves drop prematurely in the summer, the tree spends extra energy trying to replace the lost leaves. Repeated seasons of premature leaf-drop weaken the tree, making it susceptible to other diseases, and can eventually lead to its death. Can I prevent it? Yes! We offer preventative spray treatments that begin in early March. They must be applied before the buds open, so don't delay! Where can I learn more? The University of Nebraska-Lincoln Extension has a detailed write-up here, including a list of disease resistant species.
5 Comments
Fred Goering
7/14/2019 09:24:41 am
I love Yellow Delicious apples and even though our trees are over 100 yards from Cedar trees they are riddled with rust spots. What do I need to do to prevent this from happening next year.
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12/9/2022 05:40:28 am
Nice to know this info preventing my apple cedar with these infestation. Check out more with <a href="https://www.charlottesvilletree.com/diseased-trees.html">Charlottesville Diseased Trees Service</a>.
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Jill
5/16/2023 06:22:59 am
We didn’t get our trees sprayed before blooms and now we have this rust. What can we do at this point. There are small apples on our trees already.
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AuthorAmy Grewe, Certified Arborist & Co-Owner Categories
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