Sulfur Cinquefoil

sulfur cinquefoil plant
sulfur cinquefoil leaf
sulfur cinquefoil flower

Sulfur Cinquefoil

Pontentilla recta

Information Sheet (PDF)


Colorado List B - Control required in Jefferson County

General

  • Family: Rosaceae (Rose)
  • Introduced from Europe
  • Perennial forb


Habitat

  • Found in pastures, rangelands, roadsides, grasslands, shrubby areas,  open forest and logged areas, waste areas and other disturbed sites
  • May live 20-plus years


Plant


Vegetation

  • Leaf stalks and stems have perpendicular hairs; hairs may not remain on older plants
  • Leaves have 5 to 7 leaflets shaped like a palm; green on top and bottom with toothed edges
  • Mature plants grow up to 3 feet tall
  • Single to multiple stems grow from a root crown
  • Very few basal leaves, but stems have many leaves


Roots

  • Tap root and shallow spreading roots


Flower

  • Color: pale yellow
  • Five heart-shaped petals with five green sepals and five bracts below
  • One to several flowering stems, branched at the inflorescence, with a  central stalk and two opposite branches at each node forming a somewhat  flat-topped group
  • Season: May to July
  • Size: 3/4 to 1 inch wide


Seed

  • Seeds are brown, small, comma-shaped and covered with net-like veins


Reproduction

  • Seed and vegetative


Control


Biological

  • None


Chemical


Cultural

  • Prevention – maintain health of site using good grazing management and keeping good cover
  • Removal of young plants


Mechanical

  • Burning - Not recommended
  • Grazing - Not effective; animals avoid grazing because the plant contains tannins; overgrazing allows plants to spread
  • Mowing - Not recommended


More Information


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