Mollis hybrid, x kosterianum 'Koster's Brilliant Red'

Parentage: Mollis hybrid, a complex group of crosses mainly between R. molle ssp. molle and ssp. japonicum, M. Koster & Sons, 1918.
Habit: Upright rounded habit. Height 120 cm in ten years.
Flowers: Brilliant orange-red flowers. Flower size 6 to 7.5 cm.
Cold Hardiness: -15°F, -26°C.