Grasslands | A Journalism-Minded Agency with Ricardo Baca, CEO of Grasslands. The company is a PR agency for the cannabis industry… Ricardo is formerly an editor at The Denver Post, producing The Cannabist for over three years until December 2016, and is known as being the first full-time marijuana rights editor for a major American newspaper. Ricardo Baca is a 20-year veteran journalist, keynote speaker, TEDx veteran and thought leader in modern media and drug-policy circles.