What is causing gray patches on the bark of my Japanese Leaf Maple?
Tree is approx 20-30 yrs. old. We live in zone 8. Tree has been beautiful till this year. Bark is starting to fall off and turning gray.
Certified GKH Gardening Expert
It would be hard to say without a photo. Please include one, and I will be more than glad to help you to figure out what is going on with your tree.
In the meantime, this article will help you to identify issues with Maple bark: https://www.gardeningknowhow.com/ornamental/trees/maple/maple-tree-bark-disease.htm