Scientific NameHieracium pratense
Other Common Names:
Synonyms (former Scientific Names):
Flowering stages are throughout the summer but the majority is during June and early July. Foliage can last throughout the winter months. Prefers acidic soils that are low in fertility.
Leaves are oblanceolate and almost sessile. Blades (5-25 cm long by 1-3 cm wide) have long hairs both sides. Mid-vein is boldest towards the base and is white. When cut a white sap seeps out.
Flower Seed Head
Flowers are produced June through July, and throughout the summer months. Flower heads are bright yellow ray flowers while open and are 2 cm in diameter. The flower head is produced in clusters of 2 or more at the top of nearly a leafless 25-90 cm long, hairy, flower-stalk.
The seed is enclosed inside the fruit (achene). The seeds are ovate to rounded and 1.8 mm long.
Found in the northeastern United States and southeastern Canada. Commonly found in low-maintenance turfgrass, roadsides, abandoned fields, and meadows.
prostrate and nonwoody
Thorns or Spines
Approximate Flower Diameter
Dominant Flower Color
Stem Cross Section
round or oval