Description : Can you use trisodium phosphate (TSP) to kill weeds?
Last Answer : answer:TSP is used as a cleaning agent. I wouldn't use it to kill weeds. Here's an article from a reliable source, and the thing is, even if it does kill the weeds it could, ... .gov/ency/article/002489.htm Here's another. www.bobvila.com/articles/cleaning-with-tsp-trisodium-phosphate/#,V8OAtXY_BU