Can one first divide lotus tubers and then repot them and resubmerge them for the winter, or must I take them indoors once the tubers are separated? The plant did quite well this summer after having been left in the pond all last winter (with 7 blooms currently open right now), but I'm thinking maybe 2 years without thinning would be pushing it. On the other hand, I want an early start next spring as the pond is to be featured in a May garden tour. Leaving the tubers in the water undisturbed seemed to promote much earlier growth this year. Thanks for any advice you can send my way!