Gallon plant from Clytostoma callistegioides Lavender Trumpet vine. In spring thru fall this evergreen vine is covered with 2 inch wide soft lavender flowers that are cup-like funnels with dark lavender stripes down the center. This fast growing vine can reach 15 feet in a season. Hardy in zones 8a-11, and root hardy to 20 degrees. Requirements are sun to part shade and does not like to have its roots standing in water. The shiny lance-like leaves are a dark green of about 4 inches long with smooth edges.