Washington

Washington took the most aggressive state action against intoxicating hemp products of any major market. SB 5367, signed by Governor Inslee and effective July 23, 2023, was driven by youth-access concerns over delta-8 vape products marketed in convenience-store packaging that closely resembled regulated cannabis. The law classified all hemp-derived intoxicating cannabinoids — delta-8, delta-9 from hemp, delta-10, HHC, THC-O, and synthetic or chemically-converted isomers — as cannabis products subject to WSLCB regulation. The practical result: any product with detectable THC must be sold through the licensed cannabis system, tested by ORELAP-model laboratories, labeled per cannabis rules, age-gated at 21+, and taxed at the same rate as marijuana. WSLCB issued implementing rules through Chapter 314-55 WAC amendments in 2024, and the 2026 session considered additional refinements on per-serving caps and enforcement. Washington’s industrial hemp program under WSDA (RCW 15.140) continues to operate at Farm Bill delta-9 standards for cultivation, but the market has contracted sharply — WSDA-licensed growers fell from 220 in 2020 to 42 in 2025. Because Washington’s framework already routes intoxicating hemp through the licensed cannabis channel, the November 12, 2026 federal cliff will require limited state-level adaptation compared to more permissive markets.