Starting Nov. 12, 2026, federal rules count THCA in total THC when defining...

https://www.bookmark-tango.win/starting-nov-12-2026-the-federal-hemp-definition-shifts-to-a-total-thc

Starting Nov. 12, 2026, federal rules count THCA in total THC when defining hemp. By Dec. 11, products must also stay under a 0.4 mg total-THC cap per container, which may limit what shoppers find on shelves.