The Q&A Archives: Magnolia Tree

Question: The little gem magnolia tree I planted last spring did great all summer and looked green and healthy all of the winter. But now looks bad. It is losing leaves. The existing leaves are turning brown with blackish brown spots. How can I help it survive?

Answer: Magnolia are subject to bacterial leaf spots caused by the bacterium Pseudomonas syringae or a a number of different fungal infections. These leaf spots rarely require chemical controls, and since I don't know exactly what is causing the spots, I can't make a recommendation. To keep the problem from reinfecting healthy leaves. be sure to rake up and destroy any fallen leaves.
dispose of infected leaves.

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