Yes, sage, thyme, oregano, parsley, spearmint, peppermint, and wornwood are perennial herbs and can all be winterized.
All you need to do is wait for the first frost. Then, after the frost, trim away any browned and dead stems and mulch lightly around, but not over the plants.
If you have snow, don’t worry, that’s a good thing! Snow acts as an insulator and protects plants from excessive cold, so keep the snow cover on the plant when you get it. In the spring, just remove any winter damage and carefully get rid of any debris that has blown in and become wedged in the plants.
Then just sit back and watch them grow again!
