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.

Hoary Cress (Whitetop)Cardaria draba (L.) Desv.

Photo from Montana Weed Control Association

Toxic

Rosette

Stem

Leaf

Bloom

Plant

Photos from Montana Weed Control Association

Video Supplied By Montana Weed Control Association

Attribute	Description
Toxicity	Cattle.
Growth Habit	Perennial vine, reproducing from seeds and roots.
Leaves	Alternate, simple, arrowhead-shaped, rounded or blunt tipped.
Stem	Prostrate, twining and mat-forming, up to 10 ft. long.
Flower	Funnel-shaped, pale pink to white, up to 1 in. wide; two small scale-like bracts attached below flower on flower stem.
Roots	Creeping rhizomes, extensive.
Seeds	Four per capsule, dark gray to reddish brown, three-sided.
Reproduction	Seeds viable over 60 years. Often confused with wild buckwheat which has heart-shaped sharp pointed leaves and tiny inconspicuous flowers.
Biological Controls	Bindweed moth, Bindweed gall mite.
Herbicides	Tordon & 2,4-D, Banvel & 2,4-D.