Giant Knotweed

Product Description

It is a growing to 24 m tall, with strong, extensively spreading forming large . The are 1540 cm long and 1028 cm broad, nearly heart-shaped, with a somewhat wavy, crenate margin. The are small, produced on short, dense up to 10 cm long in late summer or early autumn; it is , with male and female flowers on separate plants. It is closely related to , and can be distinguished from it by its larger size, and in its leaves having a heart-shaped (not straight) base and a crenate margin. It has a count of 2n=44.