https://reason.com/2008/08/06/disappearing-ditchweed/
Disappearing Ditchweed
Aug 6, 2008 - A perennial story in the annals of drug war stupidity is the Drug Enforcement Administration's tally of cannabis plants destroyed under its Domestic...
disappearing
https://lippard.blogspot.com/2006/09/98-of-all-eradicated-us-marijuana-is.html
The Lippard Blog: 98% of all eradicated U.S. marijuana is ditchweed
From NORML (National Organization for the Reform of Marijuana Laws) : More than 98 percent of all of the marijuana plants seized by law enfo...