Clematis Evison 'Picardy' produces large, single flowers of red and purple with deep red bars on vines just 3-4 feet tall.

Clematis Evison ‘Pistachio’ is a prolific bloomer producing beautiful white flowers tinged with green from late spring through summer.

Clematis Evison 'Poseidon' is a short, repeat bloomer with 4-5 inch wide single flowers of pink and magenta.

Clematis 'Rebecca' is among the reddest of all clematis, emerging hot red and then changing to magenta-red.

Clematis Evison 'Reflections' is very floriferous with semi-double flowers in palest lilac-blue maturing to near white.

Clematis Evison 'Rosemoor' offers rich fuchsia-red flowers with lavender-red central bands.

Clematis Evison 'Rosemoor' offers rich fuchsia-red flowers with lavender-red central bands.

Clematis Evison ‘Sally’ is a beautiful, free-flowering pink cultivar with deeper pink central bars.

Clematis Evison ‘Sally’ is a beautiful, free-flowering pink cultivar with deeper pink central bars.

Clematis Evison 'Samaritan Jo' has pointed petals in silvery pink with purple edging and dark purple and yellow centres.

Clematis Evison 'Samaritan Jo' has pointed petals in silvery pink with purple edging and dark purple and yellow centres.

Clematis Evison ‘Sarah Elizabeth’ is from the compact Boulevard series with distinctive, glowing almost salmon pink flowers.

Clematis Evison ‘Sarah Elizabeth’ is from the compact Boulevard series with distinctive, glowing almost salmon pink flowers.

Clematis Evison ‘Shimmer’ has large lilac-blue to lilac-purple flowers with a paler central bar. The flowers change to lighter blue as they age.

Clematis Evison 'Tekla' has large, single flowers of magenta-pink with light pink bars and white and purple anthers.

Clematis Evison 'Tekla' has large, single flowers of magenta-pink with light pink bars and white and purple anthers.

Clematis Evison 'The Countess of Wessex' has large, ruffled, white flowers with pink stripes and deep red stamens on plants just 4 feet tall.

Clematis Evison 'The Duchess of Cornwall' is a short, repeat bloomer with large single flowers of rich violet-blue.

Clematis Evison 'Tranquilite' has single, light blue flowers with white stripes, light yellow centers, and contrasting anthers.

Clematis Evison 'Tranquilite' has single, light blue flowers with white stripes, light yellow centers, and contrasting anthers.

Clematis Evison ‘Tsukiko’ has stunning ivory white flowers and dark purple stamens. It is extremely free flowering.

Clematis 'Vicki' has rich pink flowers with magenta-red central bands for a striking bicolour display.

Clematis 'Vicki' has rich pink flowers with magenta-red central bands for a striking bicolour display.

Clematis 'Vienetta' is an incredible double cultivar centred with tiny white and purple petals atop large white petals flushed green.

Clematis 'Volunteer' has lovely lavender-pink flowers with bold magenta central bands.