Clematis vines are some of the most recognizable and popular flowering vines available. The perennial vines are easy to manage, provide breath-taking color and offer a beautiful backdrop for perennial flowers. Most clematis vines grow 8-10 ft. tall, making them suitable for planting on a trellis, near a mailbox or lamp post, or along a fence. Many varieties can also be grown in containers. Most clematis vines benefit from regular pruning. Thanks to modern breeding efforts, clematis vines are available in an array of colors and flower forms. When buying clematis vines, take into account their hardiness zone, light requirements, flower color and bloom time.