• Blueweed is typically a biennial or short-lived perennial.  Plants normally flower in their second year, but environmental conditions may delay flowering until the plant is three to four years old.
    Bonsak Hammeraas, Bioforsk, Norwegian Institute for Agricultural and Environmental Research

  • Canada thistle is difficult to control because it is a creeping perennial plant that reproduces through vegetative buds in its root system and from the seeds it produces each year.
    Bonsak Hammeraas, Bioforsk - Norwegian Institute for Agricultural and Environmental Research, Bugwood.org

  • Purple loosestrife can be mistaken for the native wildflower, fireweed; however, purple loosestrife has a characteristic squared stem.
    Eric Coombs, Oregon Department of Agriculture, Bugwood.org

  • Dalmatian toadflax, a Priority 2B state listed noxious weed species in Montana is native to the Mediterranean region of the world and was introduced into the United States as an ornamental due to its showy yellow snapdragon like flowers.
    Utah State University Archive, Utah State University, Bugwood.org

Montana Noxious Weed Education Campaign (MTNWEC)

“To educate the people of Montana about the economic and environmental impacts of noxious weeds
while encouraging the public to participate in ecologically based integrated weed management.”


Since its inception in 1995, the Montana Noxious Weed Education Campaign has tailored its mission toward educating the people...

Read more


Shantell Frame-Martin
Montana Noxious Weed Education Campaign Coordinator
(406) 444-9491

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