You can do so any time you like. If you want to keep growing them in a container, I'd suggest potting them up to a larger size now and with a good quality potting soil. Allow the remaining stems to brown and dry thoroughly before removing them - once they have reached the proper state, they tend to fall off anyway. Keep the container just barely moist to the touch - do not overwater nor allow the soil to dry out completely. You can also plant them in the ground at this time if you prefer, in an area that has very good drainage and is not overly irrigated through the summer. They won't do anything else this season but they should bloom for you next year, although at their normal bloom time, not Valentine's Day :-))

Thank you garden gal, that's exactly what I needed to know. It's ok w/ me if they don't blossom again on or around V day. As long as I atleast get to see them again, then any season is alright with me. Thanx again.