In late April, May, and June, the Saguaro Cactus (Cereus giganteus) bears creamy white flowers with yellow centers that measure about three inches. The Saguaro Cactus flowers can be found at the end of the Saguaro arms. These flowers have a short life; they open at night and close permanently during the next day. The flowers are sweetly scented and attract bees and flies through the blooming season. By July, the flowers become red-fleshed fruits that feed the animals of the Sonoran Desert. Taken in Saguaro National Park in Tuscon, Arizona.