Welcome Annie2. I have mine outdoors in my zone
9. I'm not familiar with wintering most things. They should be slow growing
over the winter though so should do well right in their pot. If you can give them light and light watering they will probably need separating and repotting next spring
. My friend in Penn. just puts them in her unheated garage all winter and they live over and bloom for her. I cut mine back to stubble sometime during the winter but that is only because I think they get too ratty looking otherwise.