How exciting, I'll have to try this! II am a zone colder than you, but it has been a mild winter so far - 50'F today if you can believe it! The only roses that I have been able to root to date are the ones that root themselves where they touch the ground - like baby blanket and roseberry blanket. Also, a bird planted a wild rose in my garden (and another in a wintersowing container). I could encourage more blanket roses for trade later in the year.