Scientific NameHieracium aurantiacum
Orange hawkweed has a 20 to 70 cm stalk covered with stiff black hairs. Broken stem and leaves will exude a milky juice when broken. This plant spreads by 3 different habits seed, long spreading rhizomes, and above ground runners.
The leaves covered with stiff hairs are club-shaped with smooth margins. Leaves are basal and usually measure 5-15 cm long and 1-3.5 cm wide.
Orange Flowers, milky juice in leaves and stem and basal leaves.
Flower Seed Head
2 to 2.5 cm across the flower head consists of burnt-orange ray florets. The compact terminal cluster bears 5 to 25 flower heads. Floral bracts covered with stiff black hairs 6-8mm long are usually arranged in 2-3 rows.
An achene containing a 2 mm long purplish black oblong seed. The surface of which has lengthwise ridges. 3 mm long off-white hairs make up the pappus.
Found throughout Canada and the Northern half of the United States this weed is a serious problem in pastures, roadsides, and lawns.
upright and nonwoody,
prostrate and nonwoody
Thorns or Spines
Approximate Flower Diameter
Dominant Flower Color
shorter than leaf
Stem Cross Section
round or oval