'Viola' clematis (Clematis 'Viola') Genus:  Clematis ‘Viola’ is, in a word, sumptuous. The velvety, dark purple flowers are exceptional in their profusion and richness. This is a vigorous vine, reaching 10 feet tall, but climbs reasonably well without too much assistance (unlike some other large clematis varieties). Although we grew ‘Viola’ on a chain-link fence—ho hum—I always imagined its richly colored flowers more splendidly displayed against a silvery blue conifer or perhaps intertwined with a pearly white–flowered ‘Huldine’ or a rosy ‘Margot Koster’ clematis. -Richard Hawke, Big blooming clematis, Fine Gardening issue #146, page 50 Care:  Pruning group 3.

Overview

Height 8 to 10 ft. Spread Indefinite Growth Pace Moderate Grower Light Full Sun to Part Shade Moisture Medium Moisture Maintenance Low Characteristics Showy Flowers Bloom Time Summer Seasonal Interest Summer Interest Type Vines