Plants that require low amounts of water are well adapted plants to this particular region. If a landscape does not include species that are native or drought tolerant in the region, then they likely are moderate to high water consuming plants. Previous studies reported that many widely used tree, shrub, and ground vegetation maintain their aesthetic and functional value in a landscape when irrigated within a range of about 20% to 80%of evapotranspiration (Salvador et al., 2011). The arid ecosystems can support plants with minimum water requirements that are drought and salt tolerant for use in afforestation, landscaping and gardening projects, as the reoccurrence of drought is a common event in arid and semi-arid lands (Le Houerou,1996).