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Top Questions About Walnut Trees

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Questions About Walnut Trees

  • Answered by
    shelley on
    May 30, 2015
    Certified Expert

    Based on my research, I believe that your tree has a bacterium named 'Brenneria nigrifluens' which causes shallow bark canker in walnut trees. It would cause the dark brown liquid exuding from the main trunk of your tree. Since this canker does not significantly harm walnut trees there are no published control measures.

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