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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  
Origin Introduced, Europe
Duration Annual
Season Warm
Distribution in the U.S. Throughout the region, less common in the southwestern Great Plains
Distribution in Oklahoma Throughout 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



Soil Type Wide Range
Habitat In waste ground, fence rows, roadsides, occasionally in cultivated fields and gardens
Successional Stage Mid


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