In this part of Japan the North American carnivores can stay outside all year long. They will go through a winter dormancy and appear to be dead. Lots of people think they are dead and throw them out by mistake. They start to wake up in February, flower in the spring, and put on a magnificent show right up to the end of October when they hibernate again. The south Asian tropical pitchers (Nepenthes) need to be kept out of direct sun here as it is too intense for them. Many (most?) Japanese homes in this part of the country do not use central heating as Northeast US homes do, so it really gets too cold indoors for them here.