The giant saguaro cactus is a universal symbol of the American west.
But sometimes they produce a fan-shaped form of uncontrolled growth at the tip.
These odd growths are referred to as cresting (or cristate), and are very rare occurrences.
It is estimated that this condition affects approximately one out of every 200,000 saguaros.
Originally, less than 200 of these abnormalities were thought to be in existence.
The crest doesnt harm the saguaro, which can continue to produce flowers and fruit.
Fasciation can also be because of random genetic mutation.
Bacterial and viral infections can also cause fasciation.
Additional environmental factors that can cause fasciation include fungi, mite or insect attack and exposure to chemicals.
General damage to a plant’s growing tip and exposure to cold and frost can also cause fasciation.
There are many places within Saguaro National Park where it’s possible for you to see these unique specimens.
Two normal saguaros.Photo credit
Photo credit
