INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE
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select
Herbicide Resistant Spotted knapweed Globally
(Centaurea stoebe ssp. micranthos)
Herbicide Resistant Spotted knapweed Globally
(Centaurea stoebe ssp. micranthos)
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Herbicide Resistant Spotted knapweed Globally
(Centaurea stoebe ssp. micranthos)
#CountryFirstYearSituationActive IngredientsSite of Action
1 Canada (British Columbia) CanadaBritish Columbia2013 Rangeland clopyralid, and picloram 7 Auxin Mimics HRAC Group 4 (Legacy O)
 		334Centaurea stoebe ssp. micranthosSpotted knapweed15061
HRAC Global Heap, I.  The International Herbicide-Resistant Weed Database.  Online.  Sunday, October 4, 2026.  Available at  www.weedscience.org

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