Is it safe for deer and other wildlife to consume plants treated with glyphosate?

By Grant Woods,

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Dr. Woods,

I need to spray 3 small food plots in NW Wisconsin with glyphosate so I can get them planted with fall crops. The deer have browsed most of the good forage out of the plots but they along with some turkeys are still foraging in the plots on a daily basis. I don’t want to spray a chemical that will harm the critters. Do I need to worry about deer that try and browse the food plots after I have treated it with glyphosate?

Thanks for the help with this question,
Mark in Wisconsin


There are no grazing restrictions on the glyphosate label.   In addition literally millions of deer and other critters have browsed on glyphosate treated crops throughout the U.S. for years without one reported negative response.  There have been literally 1,000’s of studies and not one scientific, peer-reviewed study has shown a negative relationship between glyphosate and humans or deer.  

Based on the research to date, and no known negative reports for more than a decade, you should feel comfortable using glyphosate per the instructions on the label.