The cactus wren is the state bird of Arizona (US) and the Saguaro cactus grows only in the Sonoran desert (Arizona, northern Mexico and a few strays in southeastern California) and no where else and is Arizona's state bird.
Arizona was made a state in 1912, on Valentines day and had it's centennial in 2012.
This particular saguaro is about 22 feet tall and just starting to get it's first arm. It is in my neighbors yard.
Saguaro grow very slowly. A 10 year old plant might only be 1.5 inches tall. Saguaro can reach heights of between 40-60 feet tall (12-18m). When the saguaro is fully hydrated it can weigh as much as 3200-4800 pounds or from 1451 to 2177 kilograms.
Most of it's root are only 4-6 inches (10-15 cm) deep, but can extend in a circle around the plant as far as the plant is tall, and soak up every drop of rain that falls in that are very quickly storing it in its folds.
It also has one central tap root that extends down to just over 2 feet (0.6096 meters).
In the picture you can see what is called a "saguaro boot", the area in the center that looks like a small pouch, this was a former birds nest that was later dug around by more recent building activity. Those saguaro boots can also be found in the skeletons of dead cacti and were used by the natives to carry water before the advent of the canteen. The actual skeleton of this cactus can also be seen in the photo as the dark brown woven looking area to the rear of the nest.