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Leaf Spot on Magnolia? #877423

Asked July 16, 2024, 8:30 AM EDT

I believe this is leaf spot on a Magnolia tree. A good percentage of the leaves (at least 35%) seem to be affected in the last month. Do you think it's leaf spot, or if not, can you offer identification? Also recommendations for treatment. Too much is involved to remove leaves or limbs.

Franklin County Ohio

Expert Response

Your photos are very helpful.  It does look like a leaf spot disease, most likely a fungus.  It may clear up without any chemical treatment.  It's important to avoid overhead watering and to clean up any leaf litter on the ground to avoid further spread.  Below are a couple of articles that provide more information on leaf spot diseases.  Good luck to you with your magnolia tree. If you decide you need to treat the tree in the future, you may want to call in an arborist. 
https://plantdiseasehandbook.tamu.edu/landscaping/trees/magnolia/
https://extension.umn.edu/plant-diseases/leaf-spot-diseases-trees-and-shrubs
An Ask Extension Expert Replied July 17, 2024, 9:04 PM EDT

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