Sandy: Your plant sure looks like that spread rampantly down here. I dug out and threw away some huge ones last year and I'm still finding runners and little pups popping up in two different beds. They are really pretty but area listed as a Category II invasive here in Fla. http://plants.ifas.ufl.edu/nod...
~ I'm an old gal who still loves playing in the dirt!
~ Playing in the dirt is my therapy ... and I'm in therapy a lot!