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Species
Information
- creeping
yellow cress
- Rorippa
sylvestris (L.)
Bess.
- USDA
Symbol: ROSY
- Oregon
Noxious Weed Designation: B
- Pictures
Identification:
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 ornamental 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.
Biological
Controls: No approved biological control agent is available.
Oregon
Maps of Creeping Yellow Cress Distribution
Links:
USDA
Plants Database information on creeping yellow cress
GRIN
Database information on creeping yellow cress
Oregon Department
of Agriculture information on creeping
yellow cress
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