field bindweed (Convolvulus arvensis L.)
ODA rating: B
Other common names
morning glory
Description
Perennial; blooms June to September. Stems are prostrate, one to four foot long from an extensive root system that often climbs or forms dense tangled mats. Leaves alternate, arrowhead-shaped with lobes at the base. Flowers bell or trumpet shaped, white to pinkish and one inch in diameter. Fruit a small, round capsule, usually four-seeded.
Impacts
Considered a pest through out the United States, bindweed is known for is ability to reduce crop yields by 50%. It competes with crops for moisture and nutrients, and is difficult to remove once established. The twining nature of the plant hampers harvesting of crops, especially in orchards and vineyards.
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 Images courtesy of Weed Science Society of America. |
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If images are downloaded and used from the ODA web site please be sure to credit the photographer.
Distribution in Oregon
Map legend
Yellow: limited distribution
Red: abundant
Grey: not known to be present
Biological controls
Two approved biological control agents are available, but have not been successfully established in Oregon.
Aceria malherbae
Tyta luctuosa
Informational links
WeedMapper
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