Wisteria's fragrant blooms range in color from blue to lavender or white, depending on the plant's variety. It's notable not only for its attractive hanging clusters of flowers, but also for its vigorous growth. The vine may grow 10 feet or more in one year, and can easily overwhelm nearby plants and structures. The vines become large and woody with age and need sturdy support. In Conservatory Garden, you can spot this bloom on the pergola.