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Brown leaves on my crabapple - Ask Extension

One of my crap apple trees has a lot of brown leaves in it. This happened very fast within a week or less attached three pictures showing what’s hap...

This work is supported in part by New Technologies for Ag Extension grant no. 2020-41595-30123 from the USDA National Institute of Food and Agriculture. Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture.