Skip to main content

Extension

Common Name: Wild Buckwheat
Other Names: Climbing Buckwheat, Dullseed Cornbind, Black Bindweed, Cornbind
Species Name: Polygonum convolvulus L.
Plant Type: Broadleafs/Herbaceous
Family Name: Polygonaceae

 
Plant Facts 
OriginIntroduced, Europe
DurationAnnual
SeasonWarm
Distribution in the U.S.Throughout the region, less common in the southwestern Great Plains
Distribution in OklahomaThroughout the state

ID Characteristics

  • Field Identification Characteristics
    • Stems trailing along the ground, often twinging about other plants
    • Internodes long, pubescent fine and rough
    • Leaves are heart to arrowhead shaped
    • Seedling plants have strap-shaped cotyledons and distinctive heart-shaped leaves
    • Clusters of greenish flowers are borne in leaf axils
    • Seeds are triangular, dull, black, included in the perianth
  • Leaf and Stem Characteristics
    • Leaf Type: Simple
    • Leaf Arrangement: Alternate
    • Leaf Shape: Heart to arrowhead shaped
    • Stipules: None
  • Floral Characteristics
    • Petal Number: 5 lobes
    • Flower Color: Greenish-white, sometimes purple-spotted
    • Flower Timing: June-September
    • Fruit Type: Achene
 
Habitat/Ecology 
Soil TypeWide Range
HabitatIn waste ground, fence rows, roadsides, occasionally in cultivated fields and gardens
Successional StageMid