'Ernest Markham' is a vigorous, late-flowering climber with abundant small flowers in summer. Blossoms are rich magenta, 4 inches across, with blunt-tipped sepals and light chocolate anthers.

'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.

Alpine clematis is one of the earliest clematises to bloom, in early May. It bears relatively small but delightful nodding, bell-shaped flowers, 1 to 1.5 inches in diameter, in a great variety of colors.

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.

Clematis integrifolia is a herbaceous, woody-based, upright, non-climbing perennial with a dense and somewhat sprawling habit. It bears solitary, nodding, bell-shaped flowers with slightly twisted violet to blue sepals and creamy white anthers from May to July. Sporadic blooming sometimes occurs throughout the summer. Blossoms mature to attractive, feathery, silver-green, or silvery brown seed heads.

Downy clematis is a hardy, deciduous early bloomer that can flourish in Zone 4. The species will climb to 10 feet with a little support, and it has bell-shaped, purple-blue, almost columbine-like flowers about 1 to 2 inches, sometimes up to 4 inches in diameter, that mature to fluffy, pinkish seed heads. Blooms appear in spring and early summer, sometimes followed by a second flush in late summer to early autumn

'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.

This deciduous, late-flowering twining vine with deep green leaves and profuse, fragrant white flowers is easy to grow and will thrive and bloom in shade. Star-shaped blossoms are 1 inch across, appearing from late August to October and maturing to attractive, plume-like seed heads. The shiny green foliage is leathery.

This vigorous climber can easily cover a support of 8 to 10 feet tall once established. Finely textured, dense light-green foliage makes an excellent foil for dainty, pink and carmine teardrop-shaped flowers 2 inches across. Blooms appear in early August and continue well into autumn.