I agree with Nastarana's comment below. I grew this rose in zone 4B with lowest temperatures to -30 C every winter. I would cut her back in the late fall to about 30 cms and wrap her with straw. She would regrow to 2 metres or more every summer and bloom extremely well. I grew her as a small climber to which she is very well adapted with flexible new canes that were easy to wrap or espalier. A very good rose with some winter care.

I grow this rose in Eastern Canada, zone 4b, and like it very much. It dies to the ground each winter even when covered, but has come back year after year. I love the colour, bloom form and fragrance. According to a 2008 blog I found by Danish Rosarian Niels Plougman, the parentage is Claire Renaisance X Sunhit, both Poulsen bred roses. An excerpt from that blog reads:

"...Kronprinsesse Mary Castle - It is a cream white floribunda rose, with a rosette shaped yellow center, that fades to almost pure white in the sun. It becomes a bushy little shrub rose about 3 feet tall and 2 feet wide. It´s parents are: Clair Renaissance and Sun Hit - 2 roses that are very fragrant, healthy and popular for the abundance of fragrant flowers produced from early summer, until winter sets in. It is very easy to grow because of the good disease resistance and the fully double flowers have a very sweet fragrance..."