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Black substance on my bark dust #877045

Asked July 12, 2024, 9:45 PM EDT

Find this substance pop up at different times. Do you have any ideas what it is. Looks like black oil.

Multnomah County Oregon

Expert Response

Thank you for your question, Ken. Here is a Q & A on the same topic which should provide assistance: https://extension.oregonstate.edu/ask-extension/featured/black-slime-my-barkdust-concern
Good luck!

An Ask Extension Expert Replied July 16, 2024, 3:03 PM EDT

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Black substance on my bark dust #877045

Expert Response

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