Water young trees deeply once or twice a week, allowing the soil to dry slightly between waterings. Prune in late winter to remove dead branches and encourage better fruit production. Monitor for pests such as aphids, peach tree borers, and scale insects, using neem oil or insecticidal soap as needed. Prevent fungal diseases like leaf curl and brown rot by applying a copper-based fungicide in late fall or early spring.

Nectarine trees can be grown from seed, but they may take 3–5 years to produce fruit and may not grow true to the parent variety. To improve germination, remove the seed from the pit and stratify it by refrigerating in a moist paper towel for 8–12 weeks. Plant the seed 1 inch deep in well-draining soil and keep it warm (70–85°F or 21–29°C). Germination typically takes 2–4 weeks.

Nectarine trees thrive in well-draining, sandy or loamy soil with a pH of 6.0–7.0 and require full sun for at least 6–8 hours daily. Space trees 12–15 feet apart for proper air circulation. If grown in a container, choose a 10–15 gallon pot with good drainage and repot as the tree grows.

Fertilize nectarine trees with a balanced fertilizer (such as 10-10-10) in early spring and again in midsummer. Avoid excessive nitrogen, as it can promote leaf growth over fruiting. Adding compost or organic mulch helps maintain soil fertility and moisture levels.

Nectarine trees are cold-hardy but can suffer in extreme frost. In colder climates, apply a thick layer of mulch around the base and wrap young trees with burlap for protection. Container-grown trees should be moved indoors or into a greenhouse during harsh winters.

Nectarines are typically ready for harvest in mid to late summer when they develop full color, soften slightly, and give off a sweet aroma. Gently twist or lift fruit from the branch to harvest. Prune annually in late winter to maintain tree shape, improve air circulation, and enhance fruit production for the next season.