Position or plant the dwarf nectarine tree where it receives full sunlight. A minimum of six hours of direct sunlight per day is required for the tree to produce healthy new growth and flavorful fruit.
Provide dwarf nectarines with 1 inch of supplemental irrigation each week from the spring through the summer. Note that potted dwarf nectarine trees receive drying winds from all sides and may subsequently require more frequent irrigation. Allow the surface of the soil to dry to the touch between irrigating to prevent overwatering.
Fertilize the dwarf nectarine tree with a balanced, water-soluble fertilizer that's specially formulated for fruit-bearing trees. Feed the tree with a single application in early spring before new growth begins. Mix and apply the fertilizer as directed on the product label.
Monitor dwarf nectarines for diseased, damage or dead foliage and branches. Remove problem branches or foliage with sharp, sterile pruning shears or loppers to maintain the tree's health and appearance.
Bring potted dwarf nectarine trees indoors when temperatures drop below -20 degrees Fahrenheit.