Q.The Plums On My Plum Tree Are Diseased. At Least One In Every Group Is Sort Of Over Growing And Almost Exploding It’s Skin
What is it? A pest or a disease?
BushDoctor
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on May 31, 2023
That appears to be infected by the fungus, Taphrina pruni in the early stages, given your description. This can be treated with any fungicide labeled for "plum pocket" or "plum bladder".
https://www.gardeningknowhow.com/edible/fruits/plum/treating-plum-pocket-disease.htm
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