These are ornamental plum trees (Prunus spp.) growing by a church near where I live. They have dark purple foliage, and if you look closely there are dark purple fruit too, which are very well hidden amongst the leaves.
When I noticed the fruit, I just had to give them a try. They are fairly big, with dark purple skin and gorgeous deep red colored flesh (surely packed with antioxidants). How did I know that they were edible, though? I didn’t, really, but I did know that this tree is closely related to a regular plum or cherry. I also just tried a small amount first, and I guess instinct just took over-since then I have eaten many in one session and never had any problems.
So how are they? Well I wouldn’t go out of my way to plant this tree just for the fruit, but they are not bad. It’s hard to describe the taste though-they are not bitter or sour, but not really sweet either. There is a flavor, but it’s not really amazing-although maybe I think that it’s not amazing because it’s not very sweet. But I do think that they would probably be quite good baked into a pie or something, or perhaps used in a salad, and that it something I will try to do in the future. I will also keep snacking on them when I am in the area.
I have eaten quite a few plum-like fruit planted in parks and public areas, and many of them are actually really good. Sometimes I come across trees similar to this one, but with pink fruit, which basically taste like extra sweet plums. I have also come across quite a few trees with orange or yellow fruit, which are generally quite good as well.
I don’t know exactly what this tree is, but I know that it is in the genus Prunus, which contains things like plums, cherries, peaches, and other stonefruit. If somebody can tell me exactly what it is, I would be interested to know because that way I could find some more information about it online.