Good to know.
I have practiced the vigilance part by pulling the vines out back to their emergent place, but although I knew the vine was breaking off and I wasn't getting the whole root, I never knew there was a rhizome under there.
And, sadly, I am one of the gardeners who thought my new house in a part of the country I had never lived simply came with this lovely "wildflower" until I realized what a brute it is. SO I probably have a decade to go before I'm rid of it. I haven't let a seed form for 3-4 years now, but I have never dug a single rhizome.
edited for spelling
