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sap on tree

we have a tree 15 years old. it is purple flowering and has frond type leaves i think it is a cape lilac, all up the trunk there is sap oozing out as if it had been hit with something and is bleeding, any ideas?
Submitted by BHGPhotoContest


Thanks for writing. There are a couple of plant diseases that cause bleeding like this, but there are also environmental conditions that could be the cause. Without being able to see your tree, I'm afraid I can't say for sure what the problem is -- or how to fix it.

This free service really isn't meant for diagnosing plant issues like this. For more help, I'd contact a local resource, such as a good garden center or nursery --- or the horticulture department of a local university. Someone should be able to help you a lot more if they can see what kind of tree it is and examine it.

---Justin, Senior Garden Editor,

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