Remember this plant is tuberous and it will want to go dormant in the Fall; I think it would take very strong light to keep this going indoors. I will wait until the first frost to bring mine in but it isin an outdoor, somewhat protected area. If a plant needs dormancy, as the tuberous do, they are really not bred to be grown indoors.

Thanks for the info. Maybe I'll try it under the lights for a trial period of time and then let it go dormant. I really love this begonia so I hope it will survive to start up again next spring.

One more thought - if the indoor lights are on less than l2 hours, the plant will stop blooming and go dormant. The tuberous need 'long' days to perform. Good luck.