Often identified as one of the largest white clematis, Henryi produces an abundance of huge, luminous, pure-white flowers between 15.0cm and 20.0cm in diameter with a wonderful contrasting tuft of chocolate-brown anthers. This variety also produces flowers in two waves with the first coming from late-spring to early-summer, followed be a second wave from late-summer to mid-autumn. This lovely showy clematis is ideal for arbors, trellises, pergolas or other garden structures.