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Gene from Lincoln, Ne writes

How do I prevent cedar apple rust on apple trees?

Answer:

Cedar Apple Rust is a tricky disease because it requires two hosts in fairly close proximity. Bonide Fruit Tree Spray Concentrate is labeled to treat this disease. You generally want to treat in early Spring from bud break for a few weeks until galls are dry and inactive. In many areas where there is a lot of apply growth, Junipers within several miles of the apple orchards are removed to prevent disease. These articles have additional information about the life cycle of this disease and appropriate cultural practices:

https://www.fs.fed.us/wildflowers/plant-of-the-week/gymnosporangium_juniperi-virginianae.shtml 

http://www.missouribotanicalgarden.org/gardens-gardening/your-garden/help-for-the-home-gardener/advice-tips-resources/pests-and-problems/diseases/rusts/cedar-apple-rust.aspx

Answer last updated on: 03/25/2018

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