Q.Winter Herb Care
I have rosemary, oregano, sage, mint and parsley (Italian) in large pots (18 inches). Very heavy. Will they survive in the garage on an inside wall connecting to the chicken house? I live in Wisconsin, which is not always as cold as people imagine, but well below freezing most of the winter. Zone shows different on various maps but is 5 or 6. I put them in the basement in previous years when they were in smaller pots, but they are awfully heavy for that now. Actually, the parsley is in the ground. Will it survive with heavy mulch?
I can see how those pots could be very difficult to move. Why don't you start by taking cuttings, or dig up small sections, so you have something started in case your plants don't make it. Then you can try some of the suggestions in these articles. https://www.gardeningknowhow.com/edible/herbs/hgen/how-to-take-care-of-container-herbs-during-cold-weather.htm
https://www.gardeningknowhow.com/edible/herbs/hgen/growing-herbs-in-containers.htm
https://www.gardeningknowhow.com/plant-problems/environmental/protecting-plants-winter.htm
