Why can you buy canned peaches but...

Nectarines are pretty much the same as peaches, without the fuzz, and one reason canners give for not packaging them this way is that they bruise too easily. The mechanical processing involved in canning would make them look so bad that people wouldn’t want to eat them. Plus, there is a high demand for the fresh version, which is more costly and therefore more lucrative for growers. There are far fewer nectarines than peaches grown, which also may account for the lack of canning.