If you have access to a sunny window and the plant is a manageable size, I'd keep it growing there, probably with less water than when it was outdoors (i.e. make sure the upper soil levels dry out between waterings).

I have a large potted variegated-leaf bougainvillea that I've used as a garden accent for 25 years. It gets trimmed back in fall, placed in a cool low-light location indoors and allowed to dry out between waterings. It loses some leaves over the winter, but leafs out again nicely when placed outdoors again in late spring.

This post was edited by eric_oh on Sun, Oct 5, 14 at 11:49

I have done the same as Eric, only mine goes under shop lights in my cool basement.

Thank you both for your responses.

Good luck, Ed. I used to have a couple and they dropped all their leaves when they were moved (to inside or out), so don't fret if they do, but I didn't have enough sunlight inside to keep them healthy in the winter. My MIL had a bay window that was perfect and hers bloomed all year round (grumble, grumble).