I would be great that the peaches have no pit. But in your case, maybe the pit looks deformed , may due to lack of nutrients ( Calcium in my mind) or weather related. I am not a expert. Hope someone chime in so we both can learn the causes
It’s most likely a split pit. Split pit is more likely on early ripening peach and nectarine. Sometime the pit splits into fragments. That looks like the case here. In other cases the pit just splits open. Sometimes the fruit flesh splits open as well. None of this is good. But sometimes you can salvage some good parts to eat.
Ah. Thats a split pit … the bits on either side are part of the pit which did not fully form. As @fruitnut mentions it is more common than not on early peaches, but not that extreme in terms of lack of formation of the pit.
We get that sometimes on our earlier ripening varieties. I think it’s cold damage? I think? It’s some kind of stress factor.
What gets annoying is if the peach splits open further, and then the pit gets moldy.
We had a strange winter and everything flowered early, so that must be it. The other two peach trees (scarlet Prince and red globe) flowered a little later, and they are still at the peaches-are-halfsized-and-don’t-do-anything phase.
Lots of variables involved. Growth patterns vary from year to year because weather and other factors vary. On some varieties they recommend that you not girdle the tree. That’s a practice sometimes used commercially to improve fruit size and quality on early varieties. But it can be too much of a good thing and cause split pits.