For you, Michelle, and anyone else who wants to do a lesson on saguaro cactus.
I found this website that you might find interesting.
Some of the interesting facts are that the cactus only lives in a small area of the world.
It grows 1-1.5 inchesper year in its first 8 years.
It's between 50-70 years before it starts to develop arms.
They are believed to live up to 200 years.
Commander said the cactus he was standing by was about 20 feet tall.