Over wintering rose bushes
What is the beat way to over winter rose bushes? I have 2 wild roses that I never do anything with and they do just fine. I also have a rose bush that came from the one my great grandmother planted over 100 years ago. I mulch it and it does fine too. But every single new rose bush I have bought in the past several years never makes it through the winter. I have put shredded leaf mulch piled way up around them and they still die anyway. Is there a way that can help them survive?
Westmoreland County Pennsylvania
Here is an article from the American Rose Society offering tips on various ways to overwinter roses.