I have several pots of Dahlias here in Central Massachusetts which, for
some reason, started to bloom late this year. Is it a good idea to bring
them into a very sunny room for the winter, and let them keep growing
and blooming (if they will)? Or do they require rest? Last winter,
thanks to advice from this group, I kept my potted cannia growing all
winter and it was spectacular this summer.

Thanks!