Wild Plum hollow deformed fruit
We have wild plum trees in the yard. Last year they produced very well with no issues. This year many of the trees have oversized hollow deformed plums forming (early June) I do not see any bugs or worms.
McLean County North Dakota
It is called plum pocket. This disease most often appears on native species, especially Canada plum and wild, or American plum. It is less common on domestic (European) plum and uncommon on Japanese plum. Except for removing the infected fruits, there is very little one can do this year. However, next spring before the buds break open, spray the tree with lime sulfur.
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