I have 3 kinds of Flower Carpet roses - pink, red and yellow - in z6a, Toronto. In my experience, all grow best in the sun, but they able to grow also in the 90% dry shade under maple tree with strong root competition. While in the sun growth is abundant, compact, flowers are bigger and repeats faster, in the shade (after roots reach deep in the ground) there are fewer branches, spindly growth, flowers are twice smaller that in the sun. Still no diseases.Care - no spraying of any kind, fertilizing by water-soluble fertilizer with microelementts 20-20-20 (Miracle-Gro or Plant Prod), 1/2-1/4 of recommended dosage. Good response on thin top application of Miracle Grow rose soil for the garden. Watering, of course. All need (not NEED :)) deadheading, still not much troubles. Low maintenance plant.Pink - most suitable for groundcover, comact growth, most healthy, profusion of fluffy pink flowers from June to the frost, in waves (all colors too, in turn - starts with red, then pink, then yellow). Color is cold intence pink, not coral- or hot red-pink. Tends to grow more in south direction, so plant farther north than planned.Red - was least healthy in the first year, when powdery mildew rose was growing near. After removing this source of infection - no problems. Single petaled. I wouldn't name it groundcover - it sends several very long (more than 1m -1 yrd) branches. Don't plant near pink ones - they don't compement each other. Some people like velvety rich manly color, that compements the lawn.Yellow - not groundcover at all - grows chest-high. Very healthy, bushy upright growth, largest flowers with high centers when young. I like the color - cold frosty-yellow, not hot yellow as the most yellow roses are. Does bad in the shade - very slow growth.In my conditions, Flower Carper roses are bulletproof. When even groundcovers die - roses grow. Good security plant, just don't cut in the spring - for better security coverage during cold season. Winterizes well under snow without any protection.

I had 4 Iceberg roses in the shade, z6a, Toronto - only 2 survived, in the most sunny place (70% shade) with less tree root competition. First year they had a lot of powdery mildew, the second year - only some minor black spot. While they flower all summer, flowers are few and fast passing.Planted in initially same place, other roses had better results in shade - Chuckles, Pink Flower Carpet, unknown dark red tea rose.