Newcomers to the desert can make some serious mistakes in thinking that it is not a hostile environment. Unexpected freezes make citrus a gamble in some places even though trees can look good. And some technology doesn't transfer well from commercial applications to residential spots. And lawns, you better have a good reason for planting one because they can be frustrating if not planted, irrigated and managed correctly. Deserts can be unforgiving when it comes to gardening and horticulture.