Hi JMurphy97. I copied the method used by one of our resident experts: The Bugweed. This guy has been successfully growing for 43 years! His methods work well, and this was posted in the pitcher plant forum, but works for any temperate seed requiring stratification. Here it is and much luck to you! If you already have these planted these, it may be too difficult to remove them and try this now. I would just protect your pots from being outside and exposed to harsh drying winds as was already suggested. If you have an unheated sunporch or garage area protected from the elements, that would work fine for now. I don't think you could make a claim that 'it is good for them to freeze' but that is certainly what happens in the wild. Keep in mind though that exposed to the harshest weather, not every seed in nature germinates due to drying, or being blown to a non-optimal place etc. You want maximal germination, so it is best to just use a little care, not much, as it's really not that difficult. Ok, enough from me, here it is!
The Bugweed Method
I put my seed in a vial of RO water and refrigerate it for 6 to 8 weeks. Then I put them on a 70 degree F. seed mat under lights, and wait.