Hi, I'm also in 7a and grow a wide variety of passifloras. Do you know what variety you have? If it's a cold hardy variety you can just allow it to go dormant and not worry about it until spring. I keep most of mine in a heated greenhouse but used to keep them inside under HID lights. They don't like the change of climate and will suffer from shock. I used to cut my vines way back when I brought them in and only left about 6" of stems. That way the new growth will be more acclimated to the indoor conditions. You can also root some of the vines you cut off. I cut back on the amount of water and fertilizer they get while inside but I do mist them. You might even consider running a humidifer. Not only is the low humidity bad for the plant it promotes insect infestations, especially things like spider mites and mealy bugs. A good grow light helps. Even a window with a good exposure isn't usually sufficient. You should have been feeding it over the summer. I wouldn't feed it now. I never fertilize a stressed plant but you might want to give it some Superthrive and/or B1 to help with shock. Once it's healthy again you can give it some food. Good luck.

For timber purposes, Western Pa has the finest in the world. Allegheny National Forest is a sight to behold - especially in the dead of winter !

Can't help with your climate zone, but I believe that only tropical bamboos are clumpers (i.e., not runners).

It could be quack grass.