I got this bougainvillea about six years ago. Each year I bring it inside, right before a killing frost. It has been in the same pot all these years. Bougainvillea likes to be root bound, so although I've changed the soil a couple of times I've kept the roots intact. It blooms for me almost every month of the year. The flowers are so nice while the plant is indoors that it is hard for me to put it out in the spring, but it does even better outside, so that helps!