hard peaches that don’t ripen

Question

Our tree looks healthy and produces a lot peaches, but they remain hard. What should we do to help the fruit mature? We do not prune it. Could that be it?

Answer 1

fruit trees should be pruned inside to form a basket like shape. open inside where all branches recieve t good sunlight. to many fruits will stress the tree and retard ripening

Answer 2

What variety of peach tree do you have? How old is your tree? Has it ever produced ripened fruit before? Some peach tree varieties ripen by early summer, while others not until late summer/early fall.

Are the sizes of the peaches normal or golf-ball sized? If your fruit is small and hard, then thinning your peach tree is highly recommended, which will allow more airflow and sunshine to reach the remaining fruit:
https://www.gardeningknowhow.com/edible/fruits/peach/peach-tree-thinning.htm

Here is an article from Virginia Cooperative Extension that specifically deals with growing peaches in your state.
https://pubs.ext.vt.edu/422/422-019/422-019_pdf.pdf