Sudbury-Assabet-Concord River Watershed

Invasives

Japanese Knotweed (Fallopia japonica)

Japanese knotweed is a tall herbaceous perennial that can grow to over 10 feet in height. As with all members of this family, the base of the stem above each joint is surrounded by a membranous sheath. The stems are smooth, stout and swollen at joints where the leaf meets…