| orange hawkweed | USDA PLANTS Symbol: HIAU U.S. Nativity: Exotic Habit: Forbs/Herbs |
| Hieracium aurantiacum L. |
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Taxonomic Rank: Magnoliopsida: Asterales: Asteraceae |
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| Native Range: Europe (BAIL); | |
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. |
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Identification, Biology, Control and Management Resources
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| Selected Images from Invasive.org | View All Images at Invasive.org |
 Plant(s); Michael Shephard, USDA Forest Service, Bugwood.org Additional Resolutions & Image Usage |
 Foliage; Michael Shephard, USDA Forest Service, Bugwood.org Additional Resolutions & Image Usage |
 Plant(s); in flower Nanna Borcherdt, Sitka Conservation Society, Bugwood.org Additional Resolutions & Image Usage |
 Flower(s); Michael Shephard, USDA Forest Service, Bugwood.org Additional Resolutions & Image Usage |
 Flower(s); UAF Cooperative Extension Archive, University of Alaska - Fairbanks, Bugwood.org Additional Resolutions & Image Usage |
 Flower(s); Michael Shephard, USDA Forest Service, Bugwood.org Additional Resolutions & Image Usage |
 Flower(s); Michael Shephard, USDA Forest Service, Bugwood.org Additional Resolutions & Image Usage |
 Flower(s); Michael Shephard, USDA Forest Service, Bugwood.org Additional Resolutions & Image Usage |
 Fruit(s); Ken Chamberlain, The Ohio State University, Bugwood.org Additional Resolutions & Image Usage |
 Fruit(s); Ken Chamberlain, The Ohio State University, Bugwood.org Additional Resolutions & Image Usage |
 Infestation; Michael Shephard, USDA Forest Service, Bugwood.org Additional Resolutions & Image Usage |
 Infestation; fruiting Michael Shephard, USDA Forest Service, Bugwood.org Additional Resolutions & Image Usage |
 Flower(s); Richard Old, XID Services, Inc., Bugwood.org Additional Resolutions & Image Usage |
 Fruit(s); Michael Shephard, USDA Forest Service, Bugwood.org Additional Resolutions & Image Usage |
 Field; Richard Old, XID Services, Inc., Bugwood.org Additional Resolutions & Image Usage |
 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 Additional Resolutions & Image Usage |
| EDDMapS Distribution: This map is incomplete and is based only on current site and county level reports made by experts and records obtained from USDA Plants Database. For more information, visit www.eddmaps.org |
 State(s) Where Reported invasive. Based on state level agency and organization lists of invasive plants from WeedUS database. |
| U.S. National Parks where reported invasive: |
| Great Smoky Mountains National Park (North Carolina & Tennessee) Rocky Mountains National Park (Colorado) Yellowstone National Park (Wyoming) |
