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jayco_gw

Japanese maple has a black spot with liquid oozing out...?

jayco
14 years ago

I have a very-healthy looking Japanese maple, about five years old. It's beginning to leaf out and appears totally healthy. However, I noticed a black spot on the trunk near the graft union. It sort of appears to be a very small crack or hole, but when I probed it there was no opening or soft spot I could discern. There is a dark colored liquid oozing out of it though, going down the tree trunk in a small trickle, a slightly viscous coffee color. What the heck? Does anyone have any idea what this is and if I need to do something? This is a really nice tree so I want to take action if necessary. Thanks!

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