"Description: Tan 03315 is controlled pollination techniques of artificial bred hybrid, hybrid combination
So, I think Coffee Break would be hardy to zone 6b. Kriloff loves to use garden roses in his hybrids, and Leonidas is bred from some whopper garden roses. Oddly, it has poor vigor and mildew resistance, but people seem to grow it okay below zone 8. I really would not advocate using any of these in breeding garden roses, but the colors are intoxicating in person so it’ll be fun to see if the color can translate on healthier plants.
Coffee Break callused like a weed. Tiramusa – not so much … the problem seems to be from the thin stem layers. They degrade too quickly!
As it does not appear on HMF, there are two Michel Kriloff. That’s the former that loved to use garden roses in his hybrids. The actual one’s roses, from 1995 may be, are introduced as florist roses only and with undisclosed pedigree.