I have a small herb garden in a planter on my patio. With Winter approaching, I'd like to move it indoors, but I don't know if it will continue to flourish (I'm in Pittsburgh). I grow basil, rosemary, thyme, flat leaf parsley, chives and mint. Should I try to dry what is currently alive, or should I move the planter indoors? Any advice on growing/preserving herbs would be appreciated.