What's wrong with these plums?

Many of my plums fruited for the first time last summer. They seem to have a skin affliction as seen in the pictures below. They still taste good but I’m wondering what is the cause? Could this be from pear slug / sawflies? I get plenty of them on my pears, quince and plum leaves.

I noticed that one of my neighbors seemed to have the condition too.

That’s probably something scarring the fruit when it’s small. I could see slug feeding causing damage like that. But haven’t had it myself. It could also be environmental like wind rub or freeze damage. Or possibly spray damage. You get the idea. Something damaged the young fruits.

I’m concerned that one of your neighbors has the condition too. Usually these things are not contagious to humans. And I imagine that looks quite bad on a person.

1 Like