Oval Leaf Knotweed

Polygonum arenastrum, commonly known as equal-leaved knotgrass,is a summer annual flowering plant in the knotweed family Polygonaceae. It is native to Europe and can be found on other continents as an introduced species and a common noxious weed. Other common names include common knotweed, prostrate knotweed, mat grass, oval-leaf knotweed, stone grass, wiregrass, and door weed, as well as many others, knotweed was first seen in North America in 1809 and is now seen across much...