Narrowpoint Knotweed

Polygonum leptocarpum B.L. Rob.

Buckwheat family

Plant Type
Forb/herb
Life Cycle
Annual
Mature Height
6.0 feet
Flower Color
White, Pink, Yellow, Green
Bloom Time
Early Summer, Mid Summer, Late Summer, Fall

Native Range

  • USA:  Alabama, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Pennsylvania, Rhode I., South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, Wisconsin, Wyoming
  • CAN:  Alberta, British Columbia, Manitoba, New Brunswick, Northwest Territorie, Nova Scotia, Ontario, Prince Edward I., Québec, Saskatchewan
  • MEX:  Mexico Northwest

Regional Native Status: L48 (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.