Water Smartweed

Polygonum amphibium L. var. stipulaceum Coleman

Buckwheat family

Plant Type
Forb/herb
Life Cycle
Perennial
Mature Height
4.0 feet
Flower Color
Red, Pink
Bloom Time
Late Spring, Early Summer, Mid Summer, Late Summer

Native Range

  • USA:  Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Idaho, 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, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode I., South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, West Virginia, Wisconsin, Wyoming
  • CAN:  Alberta, British Columbia, Newfoundland, Manitoba, New Brunswick, Newfoundland, Northwest Territorie, Nova Scotia, Ontario, Prince Edward I., Québec, Saskatchewan, Yukon
  • MEX:  Mexico Central, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest

Regional Native Status: L48 (N), AK (N), CAN (N), SPM (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.