Any idea what this is and how to treat it?
Flowering Plum Badly Infected With Some Disease
Daniel Buchner added on April 1, 2018 | Answered
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Answered on April 2, 2018
This looks like the beginnings of black knot fungal infection. Here is more information: https://www.gardeningknowhow.com/edible/fruits/plum/black-knot-tree-disease.htm
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