R. Madame Masson
Description: Beautiful old hybrid, dating from 1849. Forms an open upright shrub. Unusual almost flat flowers, white with a large yellow blotch, are produced in tall conical trusses. Highly recommended for cold gardens.
Parentage: catawbiense x ponticum
Ultimate Height: 3.0 meters after 10 years
Flowering Period: This plants flowers in the North Hemisphere around May-June
Availability: YES this is a stocked item
Hardiness
UK Zone
4RHS Zone
H (Fully Hardy)EGF Zone
H2US Zone
7AMin Temp
-18°C (0°F)Hardy in all but the coldest parts of Pacific Northwest and UK, France and northern Italy, around Bergen (Norway) and mildest parts of NE USA such as Cape Cod and parts of Long Island. (Please note.)