Solitary Virgin's-bower

Clematis integrifolia is a flowering vine of the genus Clematis. Like many members of that genus, it is prized by gardeners for its showy flowers. C. integrifolia bears nodding, urn-shaped blue flowers in summer that are 1.5 inches wide. It is a fairly short variety, growing only to 3 feet high. It is native to Europe and Asia; in the USA it grows best in American Horticultural Society zones 8 to 1.