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Washington Hemp Ban (2026): 7 of 10 Banned, Full List

Partial ban

As of November 12, 2026, Washington bans 7 of 10 tracked hemp compounds at retail. Banned: Delta-9 THC (vape / inhalable), THCP, HHC (capsule / tablet), EPN / Euphorinol (edible / ingestible), Delta-10 THC, THC-O Acetate and HHC-P. Restricted or gray: Delta-8 THC and THCV. Legal: THCa.

Each row below links to the determination with the controlling law verbatim.

Latest update September 23, 2026: HHC in Washington: Status changed from illegal to restricted. Change history

When does the Washington hemp ban take effect?

No hemp ban effective date is pending in Washington as of November 13, 2026. Most of the federal hemp redefinition takes effect December 11, 2026. A narrower piece, covering cannabinoids the plant cannot naturally produce, started November 12, 2026.

Watchenforcement date in 28 days (H.R. 6500 (Pub. L. 119-103) / Pub. L. 119-37 Sec. 781); recent bill or agency activity

in 28 days December 11, 2026
Delta-8 THC: Federal hemp redefinition, Dec 11 piece: total THC 0.3% and 0.4 mg total THC per container
Federal · Enforcement date · H.R. 6500 (Pub. L. 119-103) / Pub. L. 119-37 Sec. 781
Pub. L. 119-103 (continuing resolution, Sept 2, 2026) delayed the rest of the Pub. L. 119-37 sec. 781 hemp definition to Dec 11, 2026 (CRS IF13136, Sept 28, 2026): hemp is measured by total tetrahydrocannabinols including THCA (0.3% dry weight), and any final product over 0.4 mg combined total THC and cannabinoids with similar effects per container leaves hemp. A product that leaves hemp is marijuana, Schedule I, in every state.
October 21, 2026
Delta-9 THC: HR 4963: Marijuana 1-to-3 Act of 2025
Federal · Bill activity
Introduced in House (2025-08-12)
took effect November 12, 2026
EPN / Euphorinol: Federal hemp redefinition, Nov 12 slice: cannabinoids the plant cannot produce leave hemp
Federal · Enforcement date · H.R. 5371 (Pub. L. 119-37, Sec. 781)
took effect November 12, 2026
THC-O Acetate: Federal hemp redefinition, Nov 12 slice: THC-O acetate, which the plant cannot produce, leaves hemp
Federal · Enforcement date · H.R. 5371 (Pub. L. 119-37, Sec. 781)
Pub. L. 119-103 sec. 2019 (Sept 2, 2026): until Dec 11, 2026 the Pub. L. 119-37 sec. 781 amendments apply only to products with cannabinoids not capable of being naturally produced by a Cannabis sativa plant (7 U.S.C. 1639o(1)(C)(ii)(I) and (iv)(I)). THC-O acetate is made only by acetylating THC outside the plant, so products containing it leave the federal hemp definition on Nov 12, 2026 and fall in the Schedule I tetrahydrocannabinols listing.
took effect November 12, 2026
HHC-P: Federal hemp redefinition, Nov 12 slice: cannabinoids the plant cannot produce, including HHC-P, leave hemp
Federal · Enforcement date · H.R. 5371 (Pub. L. 119-37, Sec. 781)
Pub. L. 119-103 sec. 2019 (Sept 2, 2026): until Dec 11, 2026 the Pub. L. 119-37 sec. 781 amendments apply only to products with cannabinoids not capable of being naturally produced by a Cannabis sativa plant (7 U.S.C. 1639o(1)(C)(ii)(I) and (iv)(I)). HHC-P is not reported as produced by the plant, so on that reading products containing it leave the federal hemp definition on Nov 12, 2026. FDA's list of plant-producible cannabinoids, due Feb 10, 2026, is still unpublished.

Every tracked hemp compound in Washington

Compound	Status	Headline	Effective
Delta-8 THC	Gray area	Synthetically derived delta-8 sales prohibited; source matters	2023-07-23
Delta-9 THC (vape / inhalable)	Illegal	Hemp Delta-9 vape - illegal	2023-07-23
THCa	Legal	delta-9-only basis - THCa flower passes definition
THCP	Illegal	Artificially derived; same WSLCB bar	2023-07-23
THCV	Gray area	Gray: an inhalable with any detectable THC is a cannabis product (RCW 69.50.101(8)(a)); THCV not named
HHC (capsule / tablet)	Illegal	Federally scheduled (schedule_i eff. 2026-05-04) · state law: gray
EPN / Euphorinol (edible / ingestible)	Illegal	EPN edible illegal in Washington - artificially derived cannabinoids prohibited in any form (WSLCB/SB 5367); intoxicating consumable reclassified as cannabis.	2023-07-23
Delta-10 THC	Illegal	Delta-10 THC illegal: synthetically derived cannabinoid ban in RCW 69.50.3251(3)	2023-07-23
THC-O Acetate	Illegal	Federally scheduled (schedule_i eff. 2026-11-12) · state law: illegal	2023-07-23
HHC-P	Illegal	HHC-P illegal: synthetically derived cannabinoid ban in RCW 69.50.3251(3)	2023-07-23

Recent changes in Washington

2026-09-23HHC (Hexahydrocannabinol): Status changed from illegal to restricted.
2026-09-23Delta-9 THC (hemp-derived): Status changed from illegal to restricted.
2026-09-23HHC (Hexahydrocannabinol): Status changed from illegal to restricted.
2026-09-23HHC (Hexahydrocannabinol): Status changed from illegal to restricted.
2026-09-23HHC (Hexahydrocannabinol): Status changed from illegal to restricted.
2026-09-23HHC (Hexahydrocannabinol): Status changed from illegal to restricted.
2026-09-23HHC (Hexahydrocannabinol): Status changed from illegal to restricted.
2026-09-23HHC (Hexahydrocannabinol): Status changed from illegal to restricted.
2026-09-23Delta-9 THC (hemp-derived): Status changed from restricted to illegal.
2026-09-23HHC (Hexahydrocannabinol): Status changed from restricted to illegal.

Nearby

Idaho hemp ban partial ban
Oregon hemp ban partial ban
Alaska hemp ban partial ban

Hemp ban in every state · All compounds in Washington · Federal hemp ban: what changes Nov 12 and Dec 11

Cite this page

Compound Analytics. "Washington Hemp Ban (2026): 7 of 10 Banned, Full List." Compound Laws, https://compoundlaws.com/bans/hemp/washington/. Accessed November 13, 2026.

Compound Laws, published by Compound Analytics, reports the record: statutes verbatim, official citations, enforcement facts and verification dates. Nothing here is legal advice and nothing here describes how to get around a law. A jurisdiction with no verified row is reported as not yet verified, never as legal. Found an error? Corrections policy.

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