A favorite with generations of gardeners, clematis vines offer colorful flowers on a manageable vine. When clematis bloom, they provide breath-taking color and a beautiful backdrop for other perennials. Clematis can be grown on a trellis, fence or in a container. Many types of clematis are available for sale, including some of the newer varieties. Choose from a range of flower colors, including white, red, purple or blue, as well as various flower forms and bloom times. These perennial vines come back year after year. Most clematis benefit from pruning. When selecting clematis vines for the garden, make sure they are suitable for your grow zone. Also, consider their sunlight requirements and flower color.