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Dee from Quinlan, Tx writes,

What can I do to treat oak tree fungus?

I have a very large oak tree that is swelling at the base. Some parts of the bark appear darker in places and the bark itself seems "swollen". Could this be a fungus? If so, what can I do to treat it? I really don't want to lose this tree.


Unfortunately we do not have a way to diagnose the tree. You should contact your local cooperative extension office and speak to the master gardener on staff. He/she should be able to help diagnose your tree and suggest what needs to be done depending on the disease. We apologize we could not be of more help!

Answer last updated on: 04/26/2013

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