Overwintering Tuberous Begonias

Agawam, MA

Hi all,
I grew Tuberous Non-stop Begonias in containers for the first time this year and I loved them! I would like to overwinter them inside. I do not have room to just bring them in and put them at a bright window - too many houseplants, plus I have 12 good sized plants to bring in. Can I force them into dormancy and just store the rhizomes/tubers/roots(?) until next spring? Any advice would be appreciated.
Thanks, Cindy

Superior, WI(Zone 4a)

I would wait till the first frost myself.Then just cut back the leave and dig up the bulbs and store them in a cool dry place till next spring.I start my in the house in March and then move them out in late May.
Dirtpig

Agawam, MA

Thanks for the info,
You also answered my other post about how long I can leave them out!
Cindy

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