I know at the fish farm in north Carolina they have had them in big pots for years now and they have gotten huge . They even lived through the hurricane they had there that destroyed the hoop house the had a couple of years ago . Some of the pots cracked because of the hoop house poles being blown into them . But they still have not replaced the cracked pots , they just used gorrilla tape to fix them . Been 8 years and the pots are still taped and the lotus are still being harvested for roots to be sold . Funny but hoop houses are still not put back they just cleared them away . I have been tempted to get one , but these plants are huge . My lilies are getting bigger but at least not as tall as lotus can get