Clematis integrifolia

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.

[1] It is a fairly short variety, growing only to 3 feet high.

In the US it grows best in American Horticultural Society zones 8 to 1.

[1][2] Several popular hybrids have been made by crossing C. integrifolia with other Clematis species.