'Nellie Moser' is easy to grow, producing large, flat flowers 6 to 8 inches in diameter with distinctive, gleaming lilac bars on each petal. This clematis blooms from May to late June, with a second, less profuse bloom in mid-August. Planted in a shady spot, the cheery pink-and-mauve-striped blossoms last for weeks instead of days.

'Alba Luxurians' is a very tough, late-flowering climber with small flowers that open from midsummer to late autumn. White blossoms are sometimes faintly tinged with mauve when young, and are open, bell-shaped, single, and 2 to 3 inches across. Foliage is slightly gray-green.

'Golden Tiara' is a vigorous, late-flowering climbing vine to 15 or 20 feet tall with intense golden-yellow, bell-shaped flowers that eventually fully open to reveal crimson filaments. It blooms profusely from midsummer to late fall. The seedheads are fluffy and attractive in their own right. Native to western China.

A deciduous climber native to the southeastern United States, Clematis crispa bears lavender-blue, bell-shaped flowers with curly edges in summer. Its blooms are not profuse, but their elegant shape makes this plant a good choice for trellises, growing through shrubs, or planting in damp areas. The flowers are slightly fragrant and are followed by attractive seedheads. It also makes an unusual cut flower.