User talk:47.32.191.39

Hi, I have a question about a fact discussed on this page. How do we know that an estimated 60 percent or more of all cannabis consumed in the United States is grown in these counties? This is the section I am referring to. "Humboldt, Mendocino, and Trinity counties have long been known as Northern California’s Emerald Triangle as it is estimated that 60 percent or more of all cannabis consumed in the United States is grown there."