INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE
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Herbicide Resistant Italian Thistle Globally
(Carduus pycnocephalus)
Herbicide Resistant Italian Thistle Globally
(Carduus pycnocephalus)
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Herbicide Resistant Italian Thistle Globally
(Carduus pycnocephalus)
#CountryFirstYearSituationActive IngredientsSite of Action
1 New ZealandNew Zealand 1997 Pastures 2,4-D, MCPA, and MCPB 30 Auxin Mimics HRAC Group 4 (Legacy O)
 		43Carduus pycnocephalusItalian Thistle513
HRAC Global Heap, I.  The International Herbicide-Resistant Weed Database.  Online.  Sunday, October 18, 2026.  Available at  www.weedscience.org

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