Erect Knotweed

Polygonum erectum L.

Buckwheat family

Plant Type
Forb/herb
Life Cycle
Annual
Mature Height
30 inches
Flower Color
Yellow, Green
Bloom Time
Mid Spring, Late Spring, Early Summer, Mid Summer, Late Summer, Fall

Native Range

  • USA:  Alabama, Arkansas, Colorado, Connecticut, Delaware, District of Columbia, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode I., South Carolina, Tennessee, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming
  • CAN:  Alberta, Ontario, Québec, Saskatchewan

Regional Native Status: L48 (N), CAN (N)

State-level native status is based on data available through Plants of the World Online. Regional Native Status comes from the USDA Plants Database. For more detailed native status information, please refer to BONAP.