I have a burr oak tree that I planted 4 years ago. It is about 12 feet tall now. This spring, it has a foul smelling black liquid running down the side of the trunk. It is on the side of a very slight slope, in a well tended bed, and receives full sun. This tree is fully leafed out, looks healthy, and does not appear to be in distress otherwise. What is this? Is there something I can do?
Black liquid draining out of burr oak trunk
Here are some possibilities.
Slime flux or Ramorum Blight
http://www.ehow.com/info_12154199_oozing-black-spots-base-oak.html
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