Brief summary
Old Garden Rose, portland "Arthur de Sansal", France, introduced by Scipion Cochet in 1855, Usually is purple in color, flat bloom shape, blooms 8 - 9 cm in size, has 3-5 buds per stem, repeat rebloom, has rich fragrance, the bush shape can be bushy, 80 - 100 cm in height, 60 cm in width, suitable for USDA zone 5 from -29°C and above, low resistance to rain, low resistance to black spot, low resistance to mildew.
More information
Arthur de Sansal, named for the French amateur gardener, belongs to the Portland group. The blooms are dense, dark crimson-purple, with a slightly lighter reverse. When open, the flowers are flat. Numerous small petals form a flattened bloom, sometimes with a button in the center. Flowers appear in small clusters (usually 3–5) on short pedicels, and as they open they begin to crowd each other into clusters. The blooms sit within the foliage. As in Portland roses, buds arise on progressively shorter pedicels and appear surrounded by dense foliage. The shrub shows the Portland habit: low, compact, V-shaped, with sturdy shoots and smooth dark green foliage—red on young shoots, especially at the leaf margins. The cultivar is susceptible to powdery mildew and black spot, and grows better in hot, dry climates where fungal diseases are minimal and the bush reaches 150 cm in height. It is remontant, with repeat flowering about every 6 weeks.