I have a slh outside that is a big beast; she has been out there since March. This summer was one of the worst ever in the Midwest but she is still kicking however, I'd say that half of her still hasn't filled out yet. So I'm thinking I prolly have at least a month left til she finishes... My take on the weather is she could prolly handle freezes at night fine as long up it warms up during the day... What are your guys feelings on how cold a plant can get? peace