This is not a Judd Apatow movie about pot. This is an unfolding nightmare about GMO crops.
"Superweeds" are plaguing high-tech Monsanto crops in southern US states, driving farmers to use more herbicides, return to conventional crops or even abandon their farms.
No, not that weed, but rather the Roundup resistant weeds that are causing some farmers to abandon their land. It turns out that the old adage is true: what you resists, persists. In this case it's Palmer's pigweed, which can produce 10,000 seeds at a time, is drought-resistant, and has very diverse genetics. It can grow to three meters high and easily smother young cotton plants.
Since they can find a 'safe' herbicide, they are hand-pulling the pigweed. Read more about Superweeds. It's interesting to note that no mainstream US media outlet is yet covering this.
