Q.why are the leaves turning Brown ?
My Walnut tree — the leaves are turning brown and curling up, and the walnuts don’t seem to be getting bigger. What is the problem ?
Downtoearthdigs
Answered on July 23, 2019
Was your spring wet? This can lead to diseases.
https://s3.wp.wsu.edu/uploads/sites/2071/2013/12/Disease-Problems-in-Walnuts.pdf
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