How long does it take a saguaro (cactus) arm to grow?

The saguaro cactus is the largest cactus in the United States, and will normally reach heights of 40 feet tall. The tallest saguaro cactus ever measured towered over 78 feet into the air. The saguaro cactus grows as a column at a very slow rate, with all growth occurring at the tip, or top of the cactus. read more

How to Grow Saguaro Cactus The saguaro cactus is native to the state of Sonora in Mexico and small portions of California and Arizona in the United States. The saguaro is a large, tree-sized cactus that can survive up to 200 years. read more

A saguaro's arms usually begin to grow only after it is about 15 feet tall and around 75 years old. Despite what some may say, there is no limit to the number of arms a Saguaro can grow. read more