meadow hawkweed |
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| Asterales > Asteraceae > Hieracium caespitosum Dumort.
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| 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
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Selected Images from Invasive.org
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Foliage;
Richard Old, XID Services, Inc., Bugwood.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);
Richard Old, XID Services, Inc., 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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Plant(s); in flower
Richard Old, XID Services, Inc., 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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Flower(s);
Richard Old, XID Services, Inc., 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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