Once it warms up a bit, they will grow if they are alive…if not, they won’t. Cut off all the dead branches from last year. If they were left outside in the pots, they are probably dead since they would have experienced repeaded freeze/thaw cycles. The best way to get them to come back to plant them ion the ground or at least sink the pots into the ground up to the rim. I’d wait and watch…plants are tough and never give up.