The Mysterious Crested Saguaro takes an in-depth look into this extremely rare mutation of the saguaro cactus. Little is known about what causes this strange growth or how often it occurs. A small group called the Crested Saguaro Society started photographing and documenting all the crested saguaros they could find. Their work has reshaped our knowledge and understanding of the cactus.Presented by Arizona Public Media Producer/Editor: Andrew Brown | The University of Arizona