I think its likely that you'l see some root sprouts coming up in the spring, unless you were very thorough when digging it out.
If it likes the soil, it can come back with a passion!
Oh again I have this problem, I was so pleased when a small plant took, it's now swamped the entire fence but is mixed with a montana and I can't unravel it.
Chip, the soil is very dry and dusty and the outlook is south. I wasn't thorough about pulling out all the roots, just the main stem and what roots came with it. I did dig around for a bit but I didn't want to disturb other plants.