Evergreen vine that climbs by twining stems. Beginning in late spring, this vine produces clusters of showy yellow orchid-shaped flowers followed by papery, winged chartreuse seed pods. This fruit resembles a green to brown butterfly, hence the common name "Butterfly Vine". A second flowering will often occur in fall. This aggressive heat-loving vine can climb 15 to 20 feet up a trellis or fence. Plant in full or part sun.