All five of mine came through winter very well in my zone 6a/b (I'm on the border, basically) in Michigan. I love these roses. Mine are in part shade and do beautifully, although slower growing. Three were planted 2013, two 2014. I can hardly wait for summer blooms!
Bought 2 pencil-sized ROOTED cuttings (own-roots) from Michigin Bulbs, delivered 3/28/15. Partially leafed out. Brown spots or was it leaf damage?? Keeping in basement, under light away from all my other roses that do not have spots.