R. 'Black Adder'A new hybrid being used by hybridizers to create more black flowers. The color is somewhere between red and purple. These dark colored flowers are always popular, and even though we don't know much about this one, it will be popular. Hardy to zone 7. Rare Variety This variety is difficult to find anywhere due to these reasons Hard to propagate many cultivars do not root easily from cuttings, but at a reduced rate thus making the plant rare. Hard to