If you can't find what you are looking for, then early spring is your next best bet. They were not wormy, and did grow fairly large. It was the first time for peaches on this particular tree. Over watering is possible for every plant, whether containerized on in the ground. Peach trees will not tolerate wet feet, and you can lose the whole tree, not just the fruit crop.
Peaches are difficult to grow without a complete spray program, for both insects and diseases.
It is possible, that although you didn t have worms, you had brown rot, or another disease. Another possibility is poor germination in the spring, especially associated with a late freeze. Your local county extension office has a spray schedule available for home fruit production. Get a copy of it and be prepared for next growing season. The Arkansas Cooperative Extension Service offers its programs to all eligible persons regardless of race, color, national origin, religion, gender, age, disability, marital or veteran status, or any other legally protected status, and is an Equal Opportunity Employer.