Sulfur Cinquefoil

Sulfur cinquefoil leaf.
Sulfur cinquefoil flower.
Sulfur cinquefoil plant.
Sulfur cinquefoil flower.
Sulfur cinquefoil plant.

Sulfur Cinquefoil

Pontentilla recta

Colorado List B - Eradication required in parts of Jefferson County

Information Sheet (pdf)

Eradication Zone Map (pdf)


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.  Regrows from root crown.


Control


Biological

  • None

Chemical

  • View Information Sheet (PDF)
  • Use all chemicals according to the manufacturer's label. No specific recommendation or endorsement is made or implied by listing methods or products.

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

Treatment Timeline


JanFebMarAprMayJuneJulyAugSeptOctNovDec
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Removal











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Flowering











Seed