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They call it weed for a reason, haha it just grows like crazy.

True

That sucks though, how cold can the plants deal with before it hurts them?

I have no clue an exact temp.
The longer one waits for warm weather the better the chances of survival for the plants.

Maybe you need to grow indoors.

I could prune them and keep them smaller for indoors but the odor is strong and I prefer to keep them outdoors. I'll have to be a little more careful next year :)