Do you have a garage or something you can move them to in case you have a big cold snap?

You mean inside, right? I think it's probably ok. I started mine around this time last year and they were very strong all year. I dragged my box out this weekend but am just letting them wake up on their own for the moment.

I started my overwintered clumps about 3 weeks ago, the biggest sprouts are now forming their 3rd leaf, I have them in cardboard boxes filled with mulch + peat, next to big sunny windows.

We do not have a long growing season you are right to start them now. You will have a bigger prettier plant. Especially if you can give them a sunny window until you can put them outside.

I am glad that I have all of my canna's started because I think some new tubers that I purchased are infected with the canna virus. I have them in a different room of the house even though I have read that it can't spread from plent to plant if they are in seperate pots. As soon as I figure out if that is really what it is I will toss them

Jennifer