meadow hawkweed

Asterales > Asteraceae > Hieracium caespitosum Dumort.
Synonym(s): yellow hawkweed

Meadow hawkweed is a perennial plant in the sunflower family (Asteraceae). It grows from 1-3 ft. (0.3-0.9 m) tall and produces a milky sap when crushed. Leaves are mostly basal, lance shaped, hairy, 2-10 in. (5.1-25.4 cm) long and 1 in. (2.5 cm) wide. Flowers are yellow, dandelion-like, and develop in summer to fall. Meadow hawkweed is native to Europe and occurs in fields, roadsides and sparse woodlands. It was first found in the United States in Washington in 1969.


Identification, Biology, Control and Management Resources


Selected Images from Invasive.org

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Feature(s); Stem
Tom Heutte, USDA Forest Service, Bugwood.org
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Feature(s); Stem
Tom Heutte, USDA Forest Service, Bugwood.org
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Flower(s);
Elizabeth Bella, USDA Forest Service, Bugwood.org
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Flower(s);
Tom Heutte, USDA Forest Service, Bugwood.org
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Flower(s);
Michael Shephard, USDA Forest Service, Bugwood.org
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Plant(s);
Michael Shephard, USDA Forest Service, Bugwood.org
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Infestation; Roadside infestation
Tom Heutte, USDA Forest Service, Bugwood.org
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Infestation;
Washington State University Archive, Washington State University, Bugwood.org
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Infestation;
Washington State University Archive, Washington State University, Bugwood.org
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Diagram or Graphic; Britton, N.L., and A. Brown. 1913. Illustrated flora of the northern states and Canada. Vol. 3: 333.
USDA PLANTS Database, USDA NRCS PLANTS Database, Bugwood.org
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Invasive Reference(s):

Check Invasive.org for most current lists.
  • Montana - Noxious Weed Law
  • Oregon - Noxious Weed Law
  • Washington - Noxious Weed Law
  • Invasive Plants of the Upper Midwest


External Links


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USDA Forest Service Bugwood University of Georgia