Here is some info
http://en.wikipedia.org/wiki/C... and
http://www.bhg.com/gardening/p...
Hardy zones 7-9, considered to be an invasive weed in some states, such as CA.
Used as a vegetable by many, similar to artichokes.
I have not found it to be invasive, but it seems very tough.
Have had it a couple of years and tried to move it and it just popped back up in the same spot again.
Got it in a 3 inch pot from Whole Foods.
