Thanks for all the replies, guys. Udo, I'll look for that book. Do you all think that the weather would really be a problem? I mean, where T. radix comes from the climate is harsher than it is here. Of course I would bring them indoors in the winter so that I can control brumation, but my thought was to let them deal with the weather, as they would in the wild. Do you think that might not work?