I can only tell you what we do, and I don't know that it would help you, as you give no indication of where you are in the world.

We plant sweet peas in October here in zone 9. They will bloom in late February or early March. They are a long vine, so they need some good support. If you can provide mild winters, and good support, I think you could grow them in a window planter.

With our sweet peas, we plant calendulas, larkspurs, viola, allyssum, poppies, pansies, and snapdragons. Nothing beats larkspurs and poppies for a nice pick-me-up in dreary February.

Janie