Department Header For Noxious Weed Division
Yellowstone County, Montana
Noxious Weed
Weed Information Contact Department

Houndstongue
(Cynoglossum officinale L.)

Houndstongue

Photo from Weeds of the West, revised ed.

Houndstongue Toxic
Toxic

Houndstongue Stem
Stem

Houndstongue Leaf
Leaf

Houndstongue Bloom
Bloom

Houndstongue Seed 1
Seed

Houndstongue Seed 2
Seed

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 aboce to 3' 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.

Produced by Wyoming Weed & Pest Council in cooperation with Sandoz Crop Protection Corp.


Video Supplied By Montana Weed Control Association