University of Maryland Extension

Wetwood

My tree looks like it has a wet bleeding wound on the trunk. What is this?

Wetwood
Your tree may have a bacterial infection called “wetwood” or “slime flux”. Wetwood is most commonly found on mulberry, poplar or elm, but can infect many other hardwood trees, such as maple, oak or black gum. Symptoms are a vertical crack on the bark with bleeding, discoloration, and a foul or...
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