Ask Mr. Smarty Plants

The Lady Bird Johnson Wildflower Center is not limited exclusively to wildflowers; what it IS limited to is plants native not only to North America but to the area in which the plants are being grown.  Prunus persica, peach, is native to China, and therefore out of our realm of expertise. There are a number of members of the Prunus species that are native to North America, mostly wild plums. The "persica" in the botanical name of the plant refers to the fact that in early times, it was thought that the peach had originated in Persia; however, it actually was first grown in China, and probably passed on to the Middle East on the Silk Road before Christian times. 

We always like to encourage young gardeners, so we have this article from Colorado State University Extension, Denver County Office, Starting peaches from pits that we hope will help your son with his project. Most peaches such as you would purchase in the produce aisle are propagated by budding onto specific rootstock, which means if the seeds you have do sprout, bloom and fruit, the peaches may not look anything like the peaches from which the pit was taken.