Arizona's state flower is finally in bloom, but it won't last long. Here's where to go near metro Phoenix to see the saguaro ...

These evocative night blooming flowers have ... The Arizona Queen of the Night or Deer-Horn Cactus, which often leans and ...

Maybe you already know about the night-blooming cereus, a cactus that usually lives up to its name by blooming only after dark. Often, the plants bloom only once a year, another oddity that ...

For the female lesser long-nosed bats in the Pinacate Desert, food is scarce. One possible source of nutrients: pollen from the saguaro cactus, whose milk-white petals open up only one night a year.