Answer: Sometimes fungus sets in after a limb has started to die for other reasons. In a less attractive scenario, by the time you see a fungal "fruiting body", it's too late to do anything about the problem. Live oaks are succeptible to some pretty nasty fungal diseases, so I would have a knowledgeable professional arborist or extension agent diagnose the problem for you and make a recommendation. Your extension office can be reached by calling 409-882-7010.
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