Agave americana - Agave

How tall is that?

I'm guessing around 30' (9 m) tall. They can grow taller.

that plant must be enormous!!! I am going to plant my biggest one outside this year....I know of a few that survive outside and mine is just too big now so I am going to risk it!!

They grow pretty big before they bloom.

I would take the change because they typically don't bloom in pots. They can take a lot of space. Here's the size of one before it starting blooming:

http://www.growsonyou.com/photo/slideshow/56007-agave-americana-century-plant/member/Delonix1

It's bloomed and the original plant has died; however, they produce so many plantlets you'll always have hundreds.

Good luck Sandra....

I got the boys to move the biggest one outside today while it is fairly dry and just about movable....I have covered it with a sheet tonight... I know it's risking it but the plant is in drought now with very little juice in their leaves I think it will be fine!!!!!

They're a really tough, hardy plants and when they receive water the leaves plump up again.

Keep us posted....