Orange hawkweed is a Priority 2A state listed noxious weed in the state of Montana. This species is difficult to control because of its ability to spread by rhizomatous or above ground ‘runners’ that start new plants.UAF Cooperative Extension Archive, University of Alaska - Fairbanks, Bugwood.org
The leafy spurge hawk moth (Hyles euphorbiae) has proven to be a successful method of biological control on leafy spurge, a Priority 2B state listed noxious weed species in Montana.Norman E. Rees, USDA Agricultural Research Service - Retired, Bugwood.org
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
Yellow toadflax is a Priority 2B state listed noxious weed in Montana. Priority 2B weeds 'are abundant in Montana and widespread in many counties.'Bonsak Hammeraas, Norwegian Institute for Agricultural and Environmental Research
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...