The Saguaro Cactus Flowering season extends from late April through July. Saguaro flowers are exotic and delicate. They are the lotus flowers of the desert. They typically flower over a few months and their pollinators include bees, bats, white-winged doves, hummingbirds, orioles, woodpeckers, flickers, verdin, and house finches. Learn more about saguaros here.