Resistance Fighter & Syngenta Logos

Do You Know How Far Herbicide Resistance Has Spread?

This Resistance Fighter® program interactive map shows you when and where resistant weed species have been reported in the U.S., from 1970 through 2019. See for yourself by moving the slider below.

Fill out the form to see a list of every herbicide-resistant weed species in your state. You’ll also get our free, monthly agronomic series directly to your inbox, with the information you need to fight #toughweeds.


    The range and number of resistant weed species in a given location is indicated by the shaded area.

    Win the Fight Against Resistant Weeds

    With Syngenta, you gain access to the most diverse herbicide portfolio available to successfully manage weeds in your area. A strong program combines effective chemistries with cultural practices, such as cover crops, narrow rows and tillage.

    Fight resistance in your fields with the corn and soybean herbicide programs our agronomy experts recommend. To get started, just fill out the form.

    Sign up to receive a comprehensive list of herbicide-resistant weed species in your state and a free monthly agronomic email series.

    Which herbicide(s) did you use in 2019?

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    Check your inbox for the latest info on weed resistance management and more for #Plant2020.