Some fruit trees fare better when planted as grafts, but nectarine trees can be grown just as well when planted as seeds. A nectarine tree can be grown in USDA zones 5 through 8. Nectarine seeds should be dry before they are planted. If taking the seeds directly from a fruit, allow the pit to dry for about three days before removing the seeds from the pit. Once dried, use a nutcracker to crack the pit and remove the seeds.
Soak the nectarine seed in water overnight.
Put potting soil into a plastic bag or jar and moisten the soil. Place the nectarine seed into the middle of the soil and seal the bag or jar. Place the container into the refrigerator and leave it completely undisturbed for one month.
Check the nectarine seed regularly after the one-month mark to see if it has sprouted. It may take as long as three months for the seed to sprout.
Choose an outdoor area that gets full sun. The soil in the area should have good drainage and be fertile. To give the soil better drainage and more organic nutrients, till an area about 3 feet wide and mix in potting soil or peat moss. Allow the nectarine seed at least 12 feet of space to accommodate the full size of a nectarine tree.
Plant the sprouted seed outdoors. Nectarine seeds can be planted outdoors about a month before the spring's last frost. If it is more than a month before the last frost, the sprouted nectarine seed can be kept in the container in the refrigerator until the right time. The seed should be planted 1 inch below the surface.
Water the seed sparingly to avoid rot. After seven days, add 1/2 pound of fertilizer to the surrounding soil. Choose a 10-10-10 fertilizer, adding it in an even layer. Repeat this process after 40 days and again every year in March and May. Water seedlings regularly, keeping the soil damp but not soaked.