Clematis 'Horn of Plenty' has huge flowers 8-10 inches wide in shades of rosy purple with reddish purple veins.

Clematis 'Kardinal Wyszynski' is a striking Polish cultivar with glowing carmine red flowers with darker central bands.

Clematis 'Kimi'idera' has medium-large, star-shaped single flowers of lavender with white bars and red anthers.

Clematis Kivistik 'Ristimagi' has large, five inch wide, lavender blue flowers with magenta-red stripes produced in profusion on plants hardy to zone 3!

Large, slightly ruffled, magenta flowers with stripes of a darker hue, produced in profusion on plants hardy to zone 3!

Clematis Kivistik 'Miniseelik' is a dwarf cultivar with 3 inch wide, purplish magenta flowers with a white star on stems to just three feet tall.

Clematis Kivistik 'Minister' has large, six inch wide, mid-purple flowers with pink stripes produced in profusion on plants hardy to zone 3!

Clematis Kivistik ‘Rahvarinne’ has large, warm purplish, crinkled and ruffled flowers with brown anthers. Hardy down to zone 3!

Clematis Kivistik 'Ristimagi' has large, five inch wide, lavender blue flowers with magenta-red stripes produced in profusion on plants hardy to zone 3!

Clematis 'Lord Nevill' offers beautiful intense dark blue flowers with reddish purple bands along the frilly tepals.

Clematis 'Louise Rowe' offers lovely single and double flowers in softest mauve and pink.

Clematis 'Marie Louise Jensen' is a repeat bloomer with large double and single flowers in purple shades with contrasting anthers.

Clematis 'Mme Le Coultre' has been a classic for more than 100 years with its pure white flowers and yellow stamens.

Clematis 'Mrs P.T. James' offers amazing sky blue double and single blooms.

Clematis 'Nelly Moser' is more than 100 years old and still one of the most popular of all cultivars.

Clematis 'Paradiso' is a large flowering climber producing double and single reddish-violet flowers with darker margins.

Clematis 'Pernille' is a cold-hardy climber with single white flowers, purple margins and veining and yellow stamens.

Clematis 'Pinky' has single blooms in pink hues, with deeper pink bars, and white edges.

Clematis 'Prince Phillip' offers huge rich purple-blue flowers 8-10 inches wide with magenta central bands.

Clematis 'Proteus' is a historic cultivar with double and single blooms in shades of rosy-lilac.

Clematis 'Rhapsody' produces masses of 4-6 inch wide rich royal purple flowers with yellow stamens.

Clematis 'Rosalyn' is a cold-hardy climber with unique, semi-double, magenta-pink flowers.

Clematis 'Rouge Cardinal' offers glowing shades of red and burgundy red with brownish stamens.

Clematis 'Sealand Gem' has lovely, ruffled, 4-6 inch wide flowers in a rosy-mauve colour with mid pink bars.

Clematis 'Serenata' has rich dusky purple to purple-blue flowers with red central veins and yellow stamens.