Of course glyphosate is toxic! It is a herbicide after all – the whole point of glyphosate (G for short in this post) is to kill unwanted plants. Like all chemicals, including water and salt, G is going to be toxic to animals (including humans) at some dose. Compared to other herbicides, though, G is a pretty safe option for killing weeds. Don’t take my word for it, check out the Glyphosate Technical Fact Sheet from the National Pesticide Information Center at Oregon State. G’s relative safety is one reason why it’s become so popular.
One interesting use of G is to dry wheat before harvest. To help reduce levels of toxic fusarium fungus on wheat, it is good to harvest the wheat as early as possible but you can’t harvest it until it’s dry. So G is used to dry (aka kill) the wheat plants so the grain can be harvested. As long as the G is sprayed after the plants have fully matured, the G won’t be moved from the plant into the seeds. Here, G is actually helping farmers prevent a legitimately scary toxin from getting into the food supply. Want to learn more? Check out this video: Wheat School- Timing Pre Harvest Glyphosate Application In Wheat.
With G being used not only as a herbicide but also as a drying agent, and not just in our lawns but on our food, should we worry about our safety? In short, no.