Actinidia polygama (also known as silver vine and cat powder) is a nontoxic plant in the Actinidiaceae family. It grows in the mountainous areas of Japan and China at elevations between 500 and 1900 m.

Silver vine can reach up to 5–6 m high at maturity. It is a deciduous climber and is frost tender. The petiole leaves are silver and white in color and 6–13 cm long and 4–9 cm wide. These colorful markings make the plant identifiable from afar, until the flowering season when the leaves turn completely green.