Curlytop Knotweed

Polygonum lapathifolium L.

Buckwheat family

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

Ecosystem & Wildlife

Pollinators Native Bees; Bombus; Honey Bees; Beetles, Wasps, Flies; Butterflies; Larval Host (Butterfly); Larval Host (Moth)
Larval Host Epidemia helloides, Simyra henrici

Native Range

  • USA:  Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, 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, Washington, West Virginia, Wisconsin, Wyoming
  • CAN:  Alberta, Newfoundland, Manitoba, New Brunswick, Newfoundland, Northwest Territorie, Ontario, Prince Edward I., Québec, Saskatchewan, Yukon
  • DEN:  Greenland
  • MEX:  Mexico Central, Mexico Southwest

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

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.