I got seed for this at a plant swap last fall and it came up quite well. I am enjoying the plants which I have just kept in small pots. They have not bloomed yet but I assume they do, because otherwise they wouldn't made seed. How should I treat these this winter? If I put them in larger pots, will they eventually get larger? And bloom? Our temperatures rarely get below freezing so I think/hope they would be all right kept outside.