Drip irrigation is an excellent way to water trees and shrubs. It allows you to precisely meter water directly into the root zone without wetting foliage or watering the weeds between plants.

Drip (or trickle) irrigation systems meter a slow drip or spray of water at discrete intervals. The principle of drip irrigation is to slowly put down enough water in the plant root zone to supply the plants adequately without runoff and without wetting the soil between crop rows.