We strive to conserve water in every way possible. We can irrigate slopes with low application rate MP rotor spray heads, use drip tubing, use grey or reclaimed water, apply mulching, create tree wells, terracing, water at night, etc. There are so many tricks and methods to minimize water use within a landscape. It is a fundamental philosophy that we should be designing gardens in ways that minimize the amount of water and resources that are required to maintain it. This is the key to landscaping in southern California nowadays.