Wisteria frutescens 'Amethyst Falls'American Wisteria: Twining deciduous vine with lightly fragrant purple flowers. Full sun to part sun. Medium water. Slower growing, smaller flowers, and denser growth than other wisteria cultivars. May eventually grow to 30'. Leaves turn yellow in autumn. Clay, sand, heat and drought tolerant once established. Attracts hummingbirds and butterflies. Deer, rabbit and gopher resistant.