Sadly I only have a small apartment garden and no place for the plants in winter. I chose daylilies because they survive during the winter (then I fell in love with them), I just bought a couple of potentilla pots because I read they can stand heavy cold too. Four o' clocks it's a try, I wanted some nocturnal plants and I thought that even if they die during the winter I can always plant from seeds again. But maybe I will check to see if I find tubers in pot and put them apart.