Boston ivy Vitaceae Parthenocissus
tricuspidata (Siebold & Zucc.) Planch. symbol: PATR6
Leaf: Alternate, simple or compound, coarsely serrated, 4 to 8 inches wide, 3-lobed (or trifoliate), shiny dark green above, much paler below.
Flower: Small, green and borne in clusters on long stems, appearing in early summer.
Fruit: A blue-black berry, 1/4 to 1/3 inch across, 1 to 2 seeds.
Twig: Slender, light reddish brown, numerous lenticels, tendrils with adhesive pads are apparent opposite the bud scars, leaf scars are round and concave.
Bark: Smooth, gray-brown, corky raised lenticels.
Form: A climbing vine that may reach up to 50 feet tall.
Looks like: Virginia creeper - English ivy
Additional Range Information: Parthenocissus tricuspidata is planted in the USDA hardiness zones shown above and may seed into the landscape. Download the full-size PDF map.
More Information: Fall Color
External Links: USDA Plants Database
All material © 2019 Virginia Tech Dept. of Forest Resources and Environmental Conservation; Photos and text by: John Seiler, Edward Jensen, Alex Niemiera, and John Peterson; Silvics reprinted from Ag Handbook 654; range map source information