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 '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.

Clematis Evison 'Diamantina' has gorgeous, large, 4-6 inch wide, double pom-pom-like, purple-blue flowers.

Clematis Evison 'Diamantina' has gorgeous, large, 4-6 inch wide, double pom-pom-like, purple-blue flowers.

Clematis Evison 'Diana's Delight' has large, 4-6 inch wide, single, lavender flowers with yellow anthers on 6-8 foot vines.

Clematis Evison 'Diana's Delight' has large, 4-6 inch wide, single, lavender flowers with yellow anthers on 6-8 foot vines.

Clematis Evison Boulevard 'Edda' has large semi-double flowers of deep purple with red bars on 3-4 foot long vines.

Clematis Evison Boulevard 'Edda' has large semi-double flowers of deep purple with red bars on 3-4 foot long vines.

Clematis Evison 'Filigree' is a dwarf clematis with single and semi-double, lightly ruffled lavender flowers.

Clematis Evison 'Fleuri' is a short, repeat bloomer with large 5 inch wide single flowers of violet-purple.

Clematis Evison 'Giselle' is a stunning cultivar with narrow, pointed petals in shades of light to mid pink.

Clematis Evison 'Giselle' is a stunning cultivar with narrow, pointed petals in shades of light to mid pink.

Clematis ‘Guiding Promise’ has rich grape purple flowers with hints of raspberry at the edges around purple anthers.

Clematis Evison 'Hyde Hall' has large 5-7 inch single flowers of white with a pale green bar.