Chinook Sunrise has only been in garden for one winter. I was cautious with them and covered them with peat moss.
l can not comment on winter hardiness other than to say canes above peat moss had to be pruned. Growth this summer is still slow ( year 2 in garden) but excellent, and leaves clean (my garden has very low disease pressure).
Bloom color has been disappointing for 2 seasons for a “apricot blend”, single. Tends to a washed out pale or light pastel version, though the bud leads one to think it will be deeper - my intense “apricot” colour standards are Olds College Centennial, first bloom (later in season orange) and Prairie Peace.
Forgot about John Cabot, its a main stay planting in the front garden and has never disappointed and recovers vigorously from winter die back. Used it as an excellent seed parent but nothing yet worth mentioning - still go to Red Dawn x Suzanne, Suzanne and the spinos for the most part. My last Red Dawn is not hardy here and has only survived ( bloomed this year) because blanketed under 18 inches of peat moss.
Jens Munk’ rugosa genes make a strong statement and is an excellent non-issue explorer rose - about the only one in my experience.
Canadian prairie hybridizers need to breed a garden worthy, super hardy Canadian rose and name it Samuel Hearne as he was the first European that went to the Canadian “artic” exploring on land and lived to tell about it. Personally l believe it was Leif Erickson. Candidates for naming my first super hardy if it comes about.
You given food for thought as both R. cinnamomea as plena and R. pendinula are hardy in the back north gardens for years (the tough growing conditions garden).
And also for next springs import under my non-commercial CFIA license l see more Finn roses coming over … plus a token try again at Ran. I am redoing a large part of the back to reduce repeats. Can only import from one southern Scandinavian country as only country that made approved government list.
How do Helenae hybrids do in Finland?
I imported hybrida, lykkefund, starkodder and red robin this year. Planted in an optimal conditions test bed ( and will be covered for first winter) as El Ariana moved to recovery (12 years of testing) lower canes bloomed but tall ones do not make it through winter). Growing well before first winter arrives.
Planted Ran but rabbits eat it. A young Patricia Macoun survived and plant donated to a Canadian grower.