Plum Trees
Q.

black knots on plum tree

Zone green bay wisconsin | verheyen added on August 7, 2015 | Answered

I have a plum tree about 7 yrs. old. I cut about 10 black knots out early spring. Now tree is loaded with plums but there is about 50 black knots in it. My question: are the plums any good to eat? Should be ripe in 2 weeks. After harvest, should I cut the tree down? If I cut knots out, no branches would be left. Also, can I plant a new one in the same spot?

A.
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Nikki
Certified GKH Gardening Expert
Answered on August 10, 2015

Yes, the fruit is perfectly fine to eat. That being said, the health of your tree will eventually decline if left untreated, causing a decrease in the number of fruit produced in coming seasons. This article will help with treating black knot fungus: https://www.gardeningknowhow.com/edible/fruits/plum/black-knot-tree-disease.htm

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