B.MacIntosh said "Attempting to root grocery store mint just might work. Are you trying to grow lots of it or are you only wanting a little windowsill pot? I didn't grow much mint this year but might be able to give you a cutting or two. "
Just want a pot for the house. If you do grow outside mint is invasive isn't it?
Was very hard to find it this year at grocery store i shop at and it's getting to be a smaller bunch.
I will definitely try to root some.