Wild buckwheat

August 10, 2015

Polygonum convolvulus L.

Life cycle

Twining summer annual vine.

wild buckwheat plant
Wild buckwheat plant.


Cotyledons are oblong-oval to linear. Leaves are alternate, hairless and heart- to triangle-shaped with a pointed tip and smooth margins.

wild buckwheat seedling wild buckwheat new leaf
Wild buckwheat seedling (left). Wild buckwheat leaf (right).


Twining, herbaceous, smooth vines branch at the base and are less than 3 feet long. A membranous sheath (ocrea) surrounds the stem at the base of each petiole.

Flowers and fruit

Flowers are inconspicuous and green to white or pink. The seed is enclosed in a single-seeded, dull black, three-sided fruit.

wild buckwheat fruit wild buckwheat flowers
Fruit of wild buckwheat (left). Wild buckwheat flowers (right).



Similar weeds

  • Mile-a-minute (P. perfoliatum L.) Differs by having downward-pointing prickles on the stems, petioles and leaf veins.
  • Tartary buckwheat [Fagopyrum tataricum (L.) Gaertn.] Differs by having a more erect habit, arrowshaped leaves and a grooved, hollow stem.

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