I guess seeing as some folk prefer pictures, might as well know what you are letting yourself in for when that pot comes out of the water!
Now if you wait for the foliage to turn to mush, cross your fingers that rather painfull cold water has not already killed the tuber
Some are more cold tolerant, than others
Regards, andy
http://www.flickr.com/photos/21940871@N06/
http://s93.photobucket.com/albums/l42/adavisus/
Heres what a modest 5" pot can do: