Roswitha has always been a good performing double here, can't say that I've ever seen it bloom single.
Lovely images above of Ruby Spider, Red Volunteer and Robes for the Queen. Raspberry Frost caught my eye, I wonder if anyone is growing it in zone 4 or 5?
Razzle Dazzle Candy grew well last year, nice scapes and many pretty blooms.
Rouen Catherdral was a first time bloomer in 2015, registered as a late it finished out the season blooming up until frost.
