Wisteria floribunda ‘Black Dragon’ is particularly popular variety of Japanese Wisteria for its double flowers. The racemes of pea-like, double, violet-purple flowers smother this climber in late spring and early summer. Height: 8m (26 feet). Spread: 4m (13 feet).A specimen of Wisteria floribunda in full flower is always a stunning sight. These easy to grow climbers are perfect for clambering over a pergola or up a wall in a sunny position with well-drained soil. In May and June they bear pendulous clusters of flowers reaching up to 46cm (18”) in length.  The flowers appear in succession at the same time as the leaves emerge, which start off bronze in spring and age to green. Additional autumn interest is provided when the leaves turn butter yellow.Plant height and spread is seasonal therefore we list by pot size rather than a defined plant size. The height and spread of the plant delivered will vary depending on the season, meaning arrival images are an indication only.