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 '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 ‘Elodi’ is extremely compact with stems to just 1-2 feet long and dusky pink flowers.

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

Clematis Evison 'Ines' is a short, repeat bloomer with large 3-5 inch wide single lavender flowers.

Clematis Evison ‘Juliane’ is from the Boulevard series and grows to just 3-4 feet tall with pure white flowers with burgundy stamens.

Clematis Evison 'Lindsay' is a 6-8 foot tall, repeat-blooming vine with large 6-7 inch wide blue-purple flowers.

Clematis Evison ‘Ninon’ is from the compact Boulevard series and grows to just 4-5 feet tall with lovely pure white flowers with burgundy stamens.

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

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

Clematis Evison ‘Zara’ produces lovely light blue flowers with central yellow stamens from spring to fall on stems 5-6 feet high.

Clematis 'Fair Rosamund' is one of the few large flowering hybrids with a fragrance. Bluish white with pink bar and purple stamens.

Clematis 'Fuji Musume' is a beautiful Japanese cultivar with 6-8 inch wide mid blue flowers