Polygonum_erectum
Polygonum erectum
Species of flowering plant
Polygonum erectum, commonly called erect knotweed, is a North American species of herbaceous plant in the buckwheat family (Polygonaceae). It is found primarily in the northeastern and north-central parts of the United States, but with scattered populations in other parts of the US and also in Canada.[1]
Its natural habitat is in bottomland forests and riparian areas. It is tolerant of ecological degradation, and can also be found in disturbed open areas such as pastures and lawns.[2][3]
It was once cultivated for food by Native Americans as part of the group of crops known as the Eastern Agricultural Complex.[citation needed]