This is the Mojave Desert. Las Vegas and the high or middle deserts can have cold winters, unexpected early spring frosts and winds. Depending on the type of citrus, fruit trees can survive cold temperatures ranging from the mid to low 20s all the way to no freeze at all.
Original article: https://www.reviewjournal.com/life/home-and-garden/citrus-can-have-problems-growing-in-the-desert-2649657/
