Clematis alpina 'Constance' displays deep purple-pink tepals with white staminodes.

Clematis alpina 'Francis Rivis' displays deep blue tepals with white staminodes.

Clematis alpina 'Pink Flamingo' displays light pink, semi-double tepals with white staminodes.

Clematis alpina 'Ruby' displays deep pink tepals with white staminodes.

Clematis alpina 'Stolwijk's Gold' has unique gold foliage and perfect blue flowers for contrast.

Clematis alpina 'Willy' offers mauve-pink tepals with white staminodes.

Clematis armandii 'Apple Blossom' has light pink buds opening to white, fragrant flowers with pale pink reverses.

Clematis armandii 'Snowdrift' produces masses of small, white, fragrant flowers atop dark green, leathery foliage.

Clematis armandii 'Snowdrift' produces masses of small, white, fragrant flowers atop dark green, leathery foliage.

Clematis chrysocoma 'Sericea' very much resembles C. montana in flower and foliage with masses of pure white flowers.

Clematis cirrhosa 'Balearica' is an evergreen, winter-blooming species with fragrant, creamy white, bell-shaped flowers.

Clematis cirrhosa 'Freckles' is an evergreen, winter-blooming species with fragrant, white, bell-shaped flowers with red speckles.

Clematis crispa has small, nodding, lightly fragrant, urn-shaped flowers in shades of pale blue to violet.

Clematis fasciculiflora has wonderful burgundy-infused new growth and silver-centred leaves with fragrant winter flowers.

Clematis florida 'Alba Plena' is a spectacular species from Japan that has creamy white 3-4 inch (7-10cm) wide flowers.

Clematis florida 'Manju Kokonoe White' is a spectacular cultivar from Japan with double, creamy green and white flowers.

Clematis florida 'Sieboldii Select' has stunning white flowers with prominent deep purple and white centres.

Clematis heracleifolia 'China Purple' is a non-twining cultivar with stunning dark blue-purple flowers.

Clematis 'New Love' is a non-climbing bush clematis with fragrant blue flowers.

Clematis integrifolia 'Durandii' has rich indigo-blue flowers with deeply furrowed midribs and white stamens.

Clematis integrifolia 'Fascination' has 1.5" (4cm) deep and 1"(3cm) across dark glossy violet nodding bell shaped flowers.

Clematis 'Chloe' is a non-climbing, re-blooming bush clematis with violet flowers and yellow tipped anthers. Re-bloomer.

Clematis Sapphire Indigo is a profuse bloomer with dark purple-blue flowers throughout the summer on non-clinging stems.

Clematis 'Mongolian Bells' is a seed strain producing non-twining, low-growing clematis plants in a mix of colours.

Clematis integrifolia 'Olgae' has 1.5" (4cm) deep and 2" (5cm) across mid-blue scented flowers that curve out and upwards.