Clematis 'Daniel Deronda' is a stunning double cultivar with very large, deep purple-blue flowers with lighter central bands.

Clematis 'Dr. Ruppel' is a gorgeous bicolour cultivar with fuchsia and magenta bars with ruffled, pink edges.

Clematis 'Duchess of Edinburgh' offers beautiful double white blooms with greenish centres

Clematis 'Edo Murasaki' offers large 6-8 inch wide dramatic deep purple blooms with lighter bands and contrasting white stamens.

Clematis 'Elsa Spath' (syn. 'Xerxes') produces large, rich purple flowers with frosted central bands.

Clematis 'Ernest Markham' is one of the strongest growing cultivars with large magenta flowers flushed with red.

Clematis 'Etoile Violette' is very free flowering and vigorous with deep purple flowers.

Clematis Evison 'Abilene' has glowing pink flowers with contrasting yellow anthers.

Clematis Evison 'Abilene' has glowing pink flowers with contrasting yellow anthers.

Clematis Evison 'Acropolis' has magenta-pink flowers with dark pink ribs and contrasting yellow centres.

Clematis Evison 'Acropolis' has magenta-pink flowers with dark pink ribs and contrasting yellow centres.

Clematis 'Anna Louise' is a real stunner with rich violet flowers marked dramatically with magenta-red bands.

Clematis Evison 'Bernadine' is extremely free-flowering with palest blue and white flowers with hints of green in the central bands.

Clematis Evison 'Bijou' is a dwarf cultivar with violet-purple flowers with pink central stripes and pink anthers.

Clematis Evison 'Bourbon' has large, vibrant red flowers with pink stripes and yellow centres.

Clematis Evison 'Bourbon' has large, vibrant red flowers with pink stripes and yellow centres.

Clematis Evison ‘Cezanne’ is from the compact Boulevard series and grows to just 3-4 feet tall with lovely lavender-blue to mauve flowers.

Clematis Evison ‘Cezanne’ is from the compact Boulevard series and grows to just 3-4 feet tall with lovely lavender-blue to mauve flowers.

Clematis Evison 'Charmaine' has rich red, single to double flowers with yellow centres.

Clematis Evison 'Chevalier' has stunning violet-blue flowers with a reddish central band. The flowers can be single, semi-double or double.

Clematis Evison 'Clair de Lune' is a tall, repeat bloomer with large 5-8 inch single flowers of lavender and white flowers.

Clematis Evison 'Clair de Lune' is a tall, repeat bloomer with large 5-8 inch single flowers of lavender and white flowers.

Clematis Evison 'Corinne' has ruffled white flowers with subtle violet pink stripes and pink and white anthers.

Clematis Evison 'Corinne' has ruffled white flowers with subtle violet pink stripes and pink and white anthers.

Clematis Evison 'Darcy' produces smaller four inch wide flowers in great numbers from early summer through fall.