Knowledgebase
Fungi/Mold on our tree #871353
Asked June 03, 2024, 3:24 PM EDT
Wright County Minnesota
Expert Response
Hi Rick,
This looks like apple scab. Here's more information, and follow the link on scab:
https://apps.extension.umn.edu/garden/diagnose/plant/deciduous/crabapple/leavesspots.html
Good luck.