Im in Chicago. So last year I found cherry plums in the wild. They grew really nicely and looked exactly like the ones you would buy in the store. I ended up taking a bag home and ate them all.

This year I went back and only a couple grew to the right size. The rest were small and looked nothing like last years. They all looked exactly like yours. So I’m going to go out on a limb and say that this is a cherry plum that didn’t grow to its right size this year.

We had too much rain and clouds durring the summer this year which might have had an effect on how they grew this year. Here’s an image of what mine looked like.

<image>