Take Action Herbicide Classification Chart

Repeated use of herbicides with the same site of action can result in the development of herbicide-resistant weed populations. This chart groups herbicides and herbicide premixes by their modes of action to assist you in selecting herbicides 1) to maintain greater diversity in herbicide use and 2) to rotate among effective herbicides with different sites of action to delay the development of herbicide resistance. Updated 2023.

View Take Action Herbicide Classification Chart