The Mission of the Yellowstone County Weed Department is to assist the public, private, and other government agencies to manage and control existing noxious weed infestations as well as to prevent new invasive species from infesting Yellowstone County.

Orange HawkweedHieracium aurantiacum L.

Photo from Weeds of the West, revised edition.

Photos from Montana Weed Control Association

Video Supplied By Montana Weed Control Association

Attribute	Description
Growth Habit	Perennial, erect to 12 inches tall.
Leaves	Lance-shaped, hairy; leaves are basal, occasionally 1–2 small leaves on stem.
Stem	Erect, bristly, terminating in an umbel of flower heads.
Flower	5 to 30 per plant, red-orange, petals with notched tips.
Roots	Fibrous.
Biological Controls	None used in Yellowstone County at this time.
Herbicides	None used in Yellowstone County at this time.