orange hawkweed

Asterales > Asteraceae > Hieracium aurantiacum L.

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

  • Weeds of the Week - USDA Forest Service, Northeastern Area, Forest Health Protection

Selected Images from Invasive.org

Click on each thumbnail to download the image at 1536x1024 resolution or below for available resolutions.
Use 768x512 for Microsoft PowerPoint and use 1536x1024 for Prints and Publications.

Plant(s);
Michael Shephard, USDA Forest Service, Bugwood.org
768x512 / 1536x1024

Foliage;
Michael Shephard, USDA Forest Service, Bugwood.org
768x512 / 1536x1024

Plant(s); in flower
Nanna Borcherdt, Sitka Conservation Society, Bugwood.org
768x512 / 1536x1024

Flower(s);
Michael Shephard, USDA Forest Service, Bugwood.org
768x512 / 1536x1024

Flower(s);
UAF Cooperative Extension Archive, University of Alaska - Fairbanks, Bugwood.org
768x512 / 1536x1024

Flower(s);
Michael Shephard, USDA Forest Service, Bugwood.org
768x512 / 1536x1024

Flower(s);
Michael Shephard, USDA Forest Service, Bugwood.org
768x512 / 1536x1024

Flower(s);
Michael Shephard, USDA Forest Service, Bugwood.org
768x512 / 1536x1024

Fruit(s);
Ken Chamberlain, The Ohio State University, Bugwood.org
768x512 / 1536x1024

Fruit(s);
Ken Chamberlain, The Ohio State University, Bugwood.org
768x512 / 1536x1024

Infestation;
Michael Shephard, USDA Forest Service, Bugwood.org
768x512 / 1536x1024

Infestation; fruiting
Michael Shephard, USDA Forest Service, Bugwood.org
768x512 / 1536x1024

Flower(s);
Richard Old, XID Services, Inc., Bugwood.org
768x512 / 1536x1024

Fruit(s);
Michael Shephard, USDA Forest Service, Bugwood.org
768x512 / 1536x1024

Field;
Richard Old, XID Services, Inc., Bugwood.org
768x512 / 1536x1024

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
768x512 / 1536x1024

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


footer line
USDA Forest Service Bugwood University of Georgia