Saguaro Stripes An original watercolor painting, 14 by 10 on 100 pound paper, can be matted for a 24 by 18 frame. The saguaro cactus is native to only the area around Phoenix, Arizona. This giant can be over 15 feet tall and houses the cactus wren. Its undulating form expands to store water during the desert monsoon season. The accordion pattern provides this wonderful study of light and shadow.