Article: Do not place any peach trees outside when there is a risk of frost. These trees typically do not survive a frost in the first year. Once the risk of frost is over, you can begin preparing the potted trees for transplant. To harden the trees, let them spend time outside each day. Gradually increase the time that they spend outside to allow them to develop a resistance to the effects of weather and pests. Start by placing them outside for one hour per day, and increase each day until they are staying outside all day.  It may take a few weeks to appropriately harden your peach trees. Don't leave the trees outside overnight during the hardening process. After your trees have been hardened, it is time to plant your peach tree. Choose a suitable place in your garden and plant the two strongest trees. If you have space, you can plant more. If your space is limited, you can give any extra trees away.

What is a summary?
Protect young trees from frost. Harden the trees. Plant the trees in your garden.