How many meters long is a saguaro cactus?

Three (3) feet (0.9144 meters) may be how tall a saguaro cactus plant (Carnegiea gigantea) is after 15 years.

Specifically, the saguaro is a slow-grower among plants in general and cactus plants in particular. But it makes up in mature height and longevity for what it lacks in speed! For example, its expected life span may reach 100-200 years. Also, its expected mature height may range from 15 - 50 feet (4.52 - 15.24 meters).