I'm in the city but last year I had a johnny jump up in a pot with a daylily (not planted but a seed got in there somehow) that bloomed all winter. And not just a bloom here or there. Lots of blooms! Even after heavy snow and hard freezes with no snow cover it kept on blooming. It finally died this summer. This was the first time I ever had any pansy or violet (besides wild violets) survive the winter.
I do have lots of snapdragons survive the winter. They bloom fairly early in the Spring so you might consider those too. They might even reseed for you.
