This second episode discusses how to implement water conservation measures in desert landscape irrigation practices. Specifically it discusses how desert irrigation systems should be divided (valved) separately for the type of plants used (xeric vs mesic plants) and the size of the plants. Small plants should be irrigated separately from trees and large shrubs. It also discusses the use of a long metal rod (rebar) and inexpensive soil moisture sensors for determining when to irrigate and how many minutes to apply water.