I live in north GA and have 2 well established rosemary plants in pots until this summer I planted them .?

They are doing very well, I use to winter them in at night and out during the day. Should I cut them back and cover them with mulch or leave them be. I got them from a wild garden about 2 years ago where they wintered outside. It rarely freezes and with the drought I dont expect snow this year. Any advice will be great.