Delta-8 and Hemp THC Laws in Montana

Montana bans the manufacture, storage or sale of synthetic cannabinoids and synthetic cannabinoid products, which the law defines to include any cannabinoid produced artificially, by chemical synthesis or biosynthesis. Hemp products sold by anyone may not exceed 0.5 milligram of total delta-9 THC per serving or 2 milligrams per package (unprocessed hemp flower is exempt from this section). Since May 5, 2025 (S.B. 375, effective on passage), a hemp product intended for eating, smoking, vaping or other use that contains total delta-9 THC may not be sold to a consumer unless the U.S. FDA has authorized it as a food or drug. Marijuana products may be sold only by licensed marijuana businesses.