It is said that deserts don't have seasons, but I can say they do. In southern Arizona the "seasons" are those times that are often dictated by the actions of the desert plants and animals. You will know it's late spring in the Sonoran desert because of the saguaro cactus blooms. These flowers bloom when the desert starts to heat up in May and June. By the second week of June most of the flowers have bloomed and summer is just around the corner. In July when the seed pods on the saguaro will ripened to a bright red and the monsoon rains arrive.