Field Guide to Noxious and Other Selected Weeds of British Columbia

Hound's-Tongue
(Cynoglossum officinale)



Photo courtesy BC Ministry of Forests

Rosette

  • Provincial Noxious Weed

  • biennial taprooted weed growing 0.5 to 1.2 metres tall; soft, hairy rosette leaves (7 to 30 cm long) produced in first year resemble the shape of a dog's tongue; stem leaves are shorter and stalkless; dull reddish-purple flowers bear 4 rounded triangular nutlets (seeds) that are covered with hooked prickles

  • easily spread by seed attachment to clothing and animals

  • contains toxic alkaloids that can cause liver damage in grazing animals

  • well adapted to forested areas, roadsides and meadows
Each flower produces 4 burred nutlets (seeds)
Seeds easily attach to passing animals

More information on hound's-tongue (Weeds BC)
Hound's-Tongue in British Columbia
Return to Field Guide to Noxious and Other Selected Weeds of BC


 

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