Did you know that the Saguaro Cactus takes 75 years to grow its first “arm;” and a Saguaro that dies this year has, on average, been around since before the Civil War.
One saguaro produces tens of thousands of seeds in a year, and as many as 40 million in a lifetime of 175 to 200 years, but out of all the seeds that a saguaro produces in a lifetime, few will survive to adulthood.
A saguaro’s growth is extremely slow. After 15 years, the saguaro may be barely a foot tall. At about 30 years saguaros begin to flower and produce fruit. By 50 years-old the saguaro can be as tall as 2 m. After about 75 years on average, it may sprout its first branches, or “arms”. By 100 years the saguaro may have reached 7,5 m. A n adult saguaro is generally considered to be about 125 years of age. Saguaros may live at least 150 years. Giant Saguaro or more attain the grandest sizes, towering as high as 15 m or more and weighing 10 tons, sometimes more, dwarfing every other living thing in the desert. Saguaros rank among the largest of any cactus or desert plant in the world. The average life span of a saguaro is at least 150 – 175 years of age. However, biologists believe that some plants may live over 200 years.
One of the largest saguaros known to exist possessed these amazing statistics: It lived 300 years, was over 12m tall, had 45 arms, and weighed 13 tons!