The U.S. Department of Agriculture (USDA) announced on Friday that it has approved hemp regulatory plans for three states and three Indian tribes -- with many more approvals likely on the horizon.
The heavy metals taken up by cannabis plants grown in coal mining remediation fields were expressed in the leaves of the mature plants. But, critically, the heavy metals did not appear in the floral buds where cannabinoids, including valuable CBD, is concentrated, the researchers told Leafly.