Q.plum tree problem
My plum tree has large black knots on it. What is it? How can I treat?
shelley
Answered on April 19, 2015
Your plum tree has black knot disease. Here is a link that discusses black knot and how to treat it:
https://www.gardeningknowhow.com/edible/fruits/plum/black-knot-tree-disease.htm
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