orange hawkweed |
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| Asterales > Asteraceae > Hieracium aurantiacum L.
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Orange hawkweed is a perennial plant that is 11.8-23.6 in. (30-60 cm) tall and produces a milky sap. Leaves are mostly basal, elliptical, 2-8 in. (5-20 cm) long, 0.4-1.2 in. (1-3 cm) wide and covered with short, stiff, black hairs. Flowers are orange to red, have square-edged petals and appear in May to June on leafless flower stalks. Orange hawkweed is native to Europe and occurs in grasslands. |
Identification, Biology, Control and Management Resources
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Selected Images from Invasive.org
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Plant(s);
Michael Shephard, USDA Forest Service, Bugwood.org
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Foliage;
Michael Shephard, USDA Forest Service, Bugwood.org
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Plant(s); in flower
Nanna Borcherdt, Sitka Conservation Society, Bugwood.org
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Flower(s);
Michael Shephard, USDA Forest Service, Bugwood.org
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Flower(s);
UAF Cooperative Extension Archive, University of Alaska - Fairbanks, Bugwood.org
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Flower(s);
Michael Shephard, USDA Forest Service, Bugwood.org
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Flower(s);
Michael Shephard, USDA Forest Service, Bugwood.org
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Flower(s);
Michael Shephard, USDA Forest Service, Bugwood.org
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Fruit(s);
Ken Chamberlain, The Ohio State University, Bugwood.org
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Fruit(s);
Ken Chamberlain, The Ohio State University, Bugwood.org
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Infestation;
Michael Shephard, USDA Forest Service, Bugwood.org
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Infestation; fruiting
Michael Shephard, USDA Forest Service, Bugwood.org
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Flower(s);
Richard Old, XID Services, Inc., Bugwood.org
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Fruit(s);
Michael Shephard, USDA Forest Service, Bugwood.org
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Field;
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: 334.
USDA PLANTS Database, USDA NRCS PLANTS Database, Bugwood.org
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Invasive Reference(s):
Check Invasive.org for most current lists.
- Colorado - Noxious Weed Law
- Montana - Noxious Weed Law
- Oregon - Noxious Weed Law
- Washington - Noxious Weed Law
- Invasive Plants: Western North America
- Invasive Plants of the Upper Midwest
External Links
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