The trial was an important test of the evidence against Monsanto and will serve as a template for litigating thousands of other claims over the herbicide.
Glyphosate, which is most commonly sold under the name Roundup, is a wildly popular herbicide manufactured by Monsanto.
Bayer said it will appeal and USA jury awards against companies are often overturned or reduced.
Monsanto - a St. Louis-based company which was acquired by Bayer pharmaceuticals in June - denies claims that Roundup can cause cancer.
Johnson, diagnosed in 2014 with non-Hodgkin's lymphoma - a cancer that affects white blood cells - says he repeatedly used a professional form of Roundup while working at a school in Benicia, California.
Air Quality Alert issued for Snohomish County starting Monday night
Environment Canada released an air quality statement for most of Saskatchewan on Wednesday. Wildfires in British Columbia have us coughing here in the Pacific Northwest.
White House Doubles Down On Omarosa's 'Lack Of Character'
She also repeated her claim that there is footage of Trump using a racial slur during filming of The Apprentice . She was one of the highest paid employees on the White House staff, given a salary of nearly $180,000 a year.
1600 people evacuated due to flash floods in the south of France
In southeastern France , 1,600 people were evacuated because of a "violent" storm, according to a government statement Thursday. Several parts of central and southeast France are on flood alert after a blazing heatwave ended abruptly in storms on Thursday.
"The Johnson vs Monsanto verdict is a win for all of humanity and all life on earth", said Zen Honeycutt, founding Executive Director of non-profit group Moms Across America. "As this case proceeds, Bayer believes courts ultimately will find that Monsanto and glyphosate were not responsible for Mr. Johnson's illness". Monsanto has stated that it will appeal the verdict.
He worked for a school district near San Francisco, spraying herbicides on weeds for several hours a day. Monsanto, a unit of the German conglomerate Bayer following a $62.5 billion acquisition, faces more than 5,000 similar lawsuits across the United States.
Macquarie Bank analysts estimate Nufarm earns about a fifth of its revenue from products containing glyphosate, the world's most widely-used herbicide.
Another trial against Monsanto is scheduled to begin in Missouri in the coming months.
Late last week, US judges found Monsanto guilty of selling the glyphosate-based weed killer "Roundup" without adequately warning consumers that it could cause cancer. Johnson's case was fast-tracked to trial given the severity of his condition and his grave prognosis.
Monsanto argues the U.S. Environmental Protection Agency does not consider glyphosate as a cancer causing chemical, there are hundreds of studies spanning decades that also show the safety of their product, and there was no evidence that the cancer was contracted after spraying glyphosate.