Environmental Precautions > Nontarget Plants and Animals
Watch out!
 
When using your grass clippings as mulches. Some herbicides can remain active in the plant tissue and can be phytotoxic when used as mulches.
 
Products containing the active ingredients clopyralid and aminopyralid can do this.
 
Herbicides that can do this will ALWAYS state this on the labels. Another great reason to read and follow the label when buying and using pesticides.
 
If you have questions regarding this, contact your UW-Extension service, lawn care specialist or the UW PAT program.
 
MAIN MENU Back Next PAT Program Credits
©UW-Extension PAT Program