Shirley Thompson lives just north of Boston, MA and experiences the typical New England freeze/thaw cycles many northern climates get. She has developed a very practical solution for protecting her roses during the winter. It’s easy to do and has the bonus of adding compost and organic material to the soil come spring.
But, I’ve included here photos on this page and they are pretty self-explanatory.
Shirley also sent me a great PDF document with more detail and I advise you read that to get the full picture. It’s below.