The giant saguaro cacti are synonymous with the western part of USA. These have a stem of around two feet diameter with large arms going upwards and all desert travelers are familiar with their shape. Saguaro cacti seldom grow symmetrically even in normal growth and have sometimes fan-shaped uncontrolled formation on the tip. Such growths are called cresting and their cause fascination. Biologists differ in opinion about the formation of crests. While some attribute the cause to genetic mutation, the others opine that physical damage is responsible for such growth. The Saguaro has 57 document specimens of Crested Saguaro.