Bred by the famous Jackman family nursery in England this nearly 100 year old cultivar remains outstanding against its peers. Good purple-blue with magenta bar. Flowers 5-7″ (12-18cm) in May, June and Sept. Mature height 6-9′ (2-3m). Barbara Jackman' has bluish purple, 5" petals with bright magenta central bars. This vine grows best in a fertile, well-drained, alkaline soil.