An interesting problem has been noted by some people about hardyness of roses in the North East US. More precisely, the question is about several Buck roses in the NE. There have been several instances of roses that have no problem in my garden, faring poorly in the NE. Earthsong is an example of such a rose. Distant Drums and Prairie Harvest are a couple more.
There are many factors that can contribute this but I feel that there is reasonable evidence that there are certain environmental factors affecting the winter hardyness of roses in the NE. I had temperatures down to -17F this last winter and I also have the wide temperature swings in the spring and fall. So I am assuming it is some factor other than these.
I was wondering if anyone had some comments or ideas about this that they would be willing to share.
On the same line, I am also wondering about some roses that thrive in the NE that are winter hardy. What are some examples of roses that might fall into this catagory?