Clematis 'Super Nova' is a cold-hardy climber with large, single white flowers, dark purple margins and veining.

Clematis 'Suzy Mac' has fragrant, purple and violet red flowers that bloom and re-bloom from spring to early fall. Hardy to zone 2!

Clematis 'Sweet Summer Love' is like a sweet autumn clematis with colourful flowers in shades of wine red and rich purple.

Clematis 'Sweet Summer Love' is like a sweet autumn clematis with colourful flowers in shades of wine red and rich purple.

Clematis 'Sympatia' has large 6-8" (15-20cm) rosy-lilac flowers.

Clematis 'Taiga' has bicolour, double flowers that look like a passionflower in shades of royal purple and white.

Clematis 'Taiga' has bicolour, double flowers that look like a passionflower in shades of royal purple and white.

Clematis 'The First Lady' offers very large flowers in silvery blue to white with light greenish bands and pretty purple stamens.

Clematis 'The President' has large, deep purple-blue flowers and striking red-tipped stamens.

Clematis 'The Vagabond' is a compact cultivar with rich purple flowers that have a central reddish purple midrib.

Clematis 'Tie Dye' is a distinctive cultivar with amazing purple flowers feathered and striped with pale lavender or white.

Clematis 'Toki' is an elegant Japanese cultivar with pure white 5-7 inch wide flowers and yellow stamens.

Clematis Vancouver 'Cotton Candy' has large, raspberry pink and white edged blooms.

Clematis Vancouver 'Danielle' has deep purple blue flowers with striking red tipped stamens.

Clematis Vancouver 'Daybreak' has large, lavender petals with a distinct white to greenish midrib radiating from dark red stamens.

Clematis Vancouver 'Deborah Dahl' is a lovely cultivar with soft lavender tepals centred with red stamens.

Clematis Vancouver 'Fragant Star' has a vanilla fragrance that is quite unique for a large, white flowered clematis.

Clematis Vancouver 'Morning Mist' has large soft pink flowers with a frilled pink edge and striking yellow stamens.

Clematis Vancouver 'Mystic Gem' has large pink and white flowers with red stamens.

Clematis Vancouver 'Plum Gorgeous' produces velvety, plum coloured blooms that fade to a purple-blue.

Clematis Vancouver 'Sea Breeze' has lavender colored wavy edged tepals and sometimes have a somewhat rosy tone.

Clematis Vancouver 'Starry Night' has flowers that are a brilliant purple with a red bar, or blue with a mauve bar.

Clematis 'Veronica's Choice' is a stunning confection with fully double flowers of white, French gray, and palest blue.

Clematis 'Ville de Lyon' is a classic heirloom cultivar with carmine red flowers frosted with lavender pink.

'Violet Stardust' is a bush clematis with violet-blue, star-shaped flowers followed by pretty seed heads.