What factors you will consider to prepare a landscape design in sandy hot areas which requires minimum maintenance,cost and has high efficiency?

the factors are The type of plant, which would create  Water needs required & Drahp heat and moisture in region & The extent of soil water retention & Salinity of the soil and irrigation water available & Intensity of wind in region

Geography of area,  direction and speed ofwind ,air, tempreture ,  in additionto  water source

Installation of Turf grass instead of actual grass to provide ground cover and greenery

formation of a water flowing reservoir will be highly liked which which make the climate temp lower than actual.

shady perennial plants are best for desert plantation but should be sown with much in order to prevent water evaporation

what abou cost saving?