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Weed DivisionWeed Indentification

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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.

HoundstongueCynoglossum officinale L.

Photo from Weeds of the West, revised edition

Video Supplied By Montana Weed Control Association

Attribute Description
Toxicity Toxic to horses, cattle, sheep and goats.
Growth Habit Biennial, rosette formed on the ground the first year, flowering stalk elongates the second year.
Leaves Velvety to the touch, basal, broad lance-shaped. Upper is narrower, pointed, clasping stem.
Stem Heavy, erect, usually branched above, to 3 ft. tall.
Flower Dark red, rarely white, 1/4" diameter in terminal clusters.
Roots Taproot.
Seeds 4 flattened but-like nutlets, each 1/4" long with short barbed appendages.
Reproduction Seeds.
Biological Controls None used in Yellowstone County at this time.
Herbicides Escort.