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Species
Information
- sulfur cinquefoil
- Potentilla
recta L.
- USDA
Symbol: PORE5
- Oregon
Noxious Weed Designation: B
- Pictures
Identification: Perennial; blooms May to June. Grows 1 to 1 1/2 ft tall. Leaves compound with 5 to 7 leaflets on each leaf. Flowers light yellow with 5 petals.
Impacts: This plant is a problem weed in disturbed areas such as roadsides and pastures and in old fields in northeastern Oregon. It is occasionally found in cultivated fields. Sulfur cinquefoil can be found replacing yellow starthistle in areas where moisture is adequate and biocontrols have reduced starthistle seed production.
Biological
Controls: No approved biological control agent is currently available, however, five insects have been targeted as potential agents.
Oregon
Maps of Sulfur Cinquefoil Distribution
Links:
USDA
Plants Database information on sulfur cinquefoil
GRIN
Database information on sulfur cinquefoil
Oregon Department
of Agriculture information on sulfur cinquefoil
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