Q.Blaze Orange Maple Tree Leaf Symptom
What is this black growth under leaves? For what it’s worth, a very old huge black walnut tree was cut down 2 years ago, approx 30 yards from our little 9 yr old maple. Thank you If you already sent the answer to this I missed it, and apologize.
BushDoctor
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on December 14, 2021
It is quite difficult to see, since the spot in question isn't quite in focus. What I can see looks like Maple Tar Spot (Rhytisma sp.).
This isn't usually fatal. Here is an article to help you with the disease and treamtent:
https://www.gardeningknowhow.com/ornamental/trees/maple/maple-tar-spot-disease.htm
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