Tea rose hardiness, etc.
For future reference I am seriously considering planting a few tea roses. I have a huge back yard that is pretty much a blank slate and I would like to plant bourbons, climbers, hybrid musks and possibly a few tea roses. I am in zone 6b, which is on the edge of the hardiness zone for teas. I grow gobs of hybrid teas, which for the most part are hardy for me. Are most tea roses as hardy as hybrid teas? Some that have caught my eye are Lady Hillingdon, Monseur Tiller, Sombreuil, Maman Cochet, Safrano, Mrs. B.R. Cant and others. As I stated above this is a plan for the future, so hopefully I'll have plenty of time to plan for the right roses. Any opinions and suggestions would be appreciated.