Care for a young pistachio tree fresh from the nursery by selecting a sunny location, planting it with 12 to 20 feet of space from other plants or trees and watering it well. Avoid fertilizing a pistachio tree during the first year.
Select a location that provides both full sun and well-drained soil. Make sure that the tree has plenty of room to grow as it can reach up to 30 feet in height. It also tends to stop growing if its roots are competing for water and nutrients.
A pistachio tree can come in either a biodegradable or nonbiodegradable container. If planting a pistachio tree in a biodegradable container, dig a hole in the soil large enough to fit the pot, and place the entire thing inside. For a nonbiodegradable container, carefully pull out the tree, and trim away any broken roots. Dig a hole far bigger than the rootball, and place the tree inside the hole, making sure that the top of the roots are level with the top of the soil.
Water the new trees immediately and well to help the roots adjust and become well-established. If the leaves turn yellow, decrease watering. Only fertilize the tree during its second and subsequent years, feeding it a balanced formula every spring.