Monsanto, Ag Groups Prevail in California Prop 65 Glyphosate Action

California Association of Nurseries and Garden Centers

A federal judge ruled the state of California cannot require Monsanto or any other company to put a cancer warning label on its product simply because it contains the herbicide glyphosate, giving Monsanto and a coalition of agriculture interests a preliminary injunction blocking the labeling order along with a major court victory.

“It is inherently misleading for a warning to state that a chemical is known to the state of California to cause cancer based on the finding of one organization (which only found that substance is ‘probably carcinogenic), when apparently all other regulatory and governmental bodies have found the opposite, including EPA,” opined U.S. District Judge William Shubb when he enjoined the state action, preliminarily set for July.

California, under its Prop 65 law, said glyphosate is a chemical “known” to California to cause cancer, its decision based almost solely on a 2015 report by the International Agency for Research on Cancer (IARC) that said glyphosate is “probably carcinogenic to humans.”

The judge said the record shows – almost all public and private research and reviews conflict with the IARC opinion – that “glyphosate is not in fact known to cause cancer, (and) the required warning is factually inaccurate and controversial.


  • Splash Omnimedia
  • Simmons Irrigation Supply
  • Harrell's
  • Modern Turf
  • Carolina International Trucks
  • Davidson Farms
  • Ray Bracken Nursery, Inc.
  • River's Edge Nursery
  • Turf Connections
  • Walker Mowing
(803) 939-6884

PO Box 16
Columbia, SC 29202