Creeping yellow cress (Rorippa sylvestris)
ODA rating: B
Other common names
yellow fieldcress
Description
Perennial; flowers June to August. Grows up to 20 in tall. Leaves 2 to 4 in long and pinnately divided into narrow, sharply toothed lobes. Flowers yellow with four small petals.
Impacts
A common pest of Netherland ormamental bulb production areas. This plant can reduce bulb crop value and marketability as a contaminate of nursery stock. It invades disturbed wetlands, and some evidence suggests that this species may be allelopathic.
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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
Can be found as pest in some agriculture crops in Western Oregon.
Map legend
Yellow: limited distribution
Red: abundant
Grey: not known to be present
Biological controls
No approved biological control agents are available.
Informational links
WeedMapper
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