How old? Sometimes more than 100 years old. Here's some interesting photos. Notice the cactus growth on the left and the relatively unchanged ocotillo on the right after 86 years.
|From Desert Laboratory on Tumamoc Hill|
This one was found in the Gran Desierto de Altar at the foot of the Sierra del Rosario mountains. I was taken by the height of the ocotillos in this area compared to most of the shorter, ground-hugging plants and the sound of wind through their spiny branches.