Japanese Knotweed — Reynoutria japonica Houttuyn

Japanese Knotweed (Reynoutria japonica)

This common invasive herbaceous perennial often forms dense stands along river banks, such as here along the French Broad River.

Madison Co., NC 4/9/2012.

Japanese Knotweed (Reynoutria japonica) Other scientific names sometime used for this species include Polygonum cuspidatum Siebold & Zuccarini and Fallopia japonica (Houttuyn) Ronse Decraene.

Madison Co., NC 4/9/2012.

Japanese Knotweed (Reynoutria japonica)

Madison Co., NC 4/9/2012.

Japanese Knotweed (Reynoutria japonica)

Madison Co., NC 4/9/2012.

All photographs and text ©2013 by Will Cook unless otherwise noted.