Hi Kris,
My first question would be why do you want perennials?

I only ask this because I get a lot of shoppers at the garden center where I work asking for perennials because they don't want to replant flowers every year BUT what most of them don't realize is that perennials have a limited season of bloom - generally spring OR summer OR fall (to simplify) while many annuals bloom frost to frost if deadeaded regularly.

So your situation sounds ideal for experimenting with different hummingbird attracting annuals which you might want to consider as you are right perennials don't survive freezing as well in pots as they do in the ground.

I don't have a specific answer to your question but I do wish you the best of luck with your flowers.

Issue is I already have the perenials .Monarda and Penstemon work great with Hummers!

You can put them in pots but you'll have to bury them in the fall because they will be freezed dried otherwise.

Here is a link that might be useful: Propagating Perennials