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Spotted Knapweed

Houndstongue

Orange Hawkweed

Dalmatian Toadflax

Leafy Spurge

Whitetop

Sulfur cinquefoil

Common Tansy

Additional State Listed Noxious Weeds

houndstongue plant with roots

Houndstongue

(Cynoglossum officinale)

Family: Boraginaceae (mustard)

Life cycle: Biennial

During the first year this plant will produce only a rosette.  In its second year of growth this plant will bolt, go to flower and produce many seeds.  Best control will occur during the first year. 

 

Rosette: Basal, alternate, ovate leaf with small hairs growing from the crown of a taproot

Flowers: Light red to purple

Seeds: small, 10-15 millimeters/oval shaped (resembles that of a dog’s tongue).  Hundreds of hooks like that of Velcro and sticks to clothes and hair. 

 

Effective control methods:

Mechanical, Chemical

Photo: USDA APHIS PPQ Archive, USDA APHIS PPQ, Bugwood. org

before lots of houndstongue

after-houndstongue gone

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