Washington Hemp & Hemp‑Derived Cannabinoid Laws

This guide provides an educational overview of Washington State’s hemp and hemp‑derived cannabinoid laws as of October 8, 2026. It is for informational purposes only and does not constitute legal advice.

Washington, USA hemp laws: quick overview

Washington defines hemp as Cannabis sativa L. and any derivatives with delta‑9 THC concentration not more than 0.3 % on a dry weight basis (RCW 15.140.020; effective via 2023 c 365, 2022 c 16, 2021 c 104) ([app.leg.wa.gov](https://app.leg.wa.gov/rcw/default.aspx?cite=15.140.020&utm_source=openai)). The WSDA enforces this limit including measurement of uncertainty in lab testing, allowing compliance if the lower bound of the uncertainty range is ≤ 0.3 % (WSDA Hemp FAQ) ([agr.wa.gov](https://agr.wa.gov/departments/agricultural-products/hemp/hemp-faq?utm_source=openai)). Hemp producers must obtain a license under RCW 15.140.060; WSDA may adopt rules for licensing and testing ([agr.wa.gov](https://agr.wa.gov/departments/agricultural-products/hemp/hemp-faq?utm_source=openai)). In 2023, E2SSB 5367 (effective July 23, 2023) restricted sale of any products with detectable THC to licensed cannabis retailers only, prohibiting unlicensed sale of hemp‑derived THC products including delta‑8, delta‑10, etc. ([lcb.wa.gov](https://lcb.wa.gov/education/hemp-synthetic-thc-products?utm_source=openai)).

Shipping guidance

Inbound shipments of hemp are allowed if compliant with WSDA licensing and testing. Age verification: sale of THC‑containing products is limited to licensed cannabis retailers, who must verify age (21+) under cannabis retail rules. Retailer registration: hemp producers/processors must be licensed by WSDA; THC‑containing products must be sold only by licensed cannabis retailers per E2SSB 5367.

Testing & COA guidance

WSDA requires testing of hemp lots with measurement of uncertainty; labs must follow WSDA protocols and be DEA‑registered (Testing Protocol guidance) ([cms.agr.wa.gov](https://cms.agr.wa.gov/WSDAKentico/Imported/2020-Hemp-Guidance.pdf?utm_source=openai)). WSDA filed rulemaking (WAC 16‑306) but paused pending federal changes ([content.govdelivery.com](https://content.govdelivery.com/accounts/WAAGR/bulletins/410bf81?utm_source=openai)). Certificate of Analysis must reflect delta‑9 THC and uncertainty; COA retention not specified in sources.

What to buy

Hemp products with delta‑9 THC ≤ 0.3 % dry weight, tested and licensed; Cannabis Health and Beauty Aid (CHABA) products like hemp seed, hemp seed oil, cosmetics are exempt from license mandate ([lcb.wa.gov](https://lcb.wa.gov/education/hemp-synthetic-thc-products?utm_source=openai)).

What to avoid

Avoid any products with detectable THC sold in unlicensed venues; synthetic or isomerized THC products (delta‑8, delta‑10, THCO, etc.) are illegal in Washington (E2SSB 5367 and LCB guidance) ([lcb.wa.gov](https://lcb.wa.gov/education/hemp-synthetic-thc-products?utm_source=openai)). Hemp‑derived consumables like CBD in food/beverage are restricted per WSDA (hemp in building materials report) ([cms.agr.wa.gov](https://cms.agr.wa.gov/WSDAKentico/Documents/Pubs/imported/Final-Hemp-For-Building-Materials-Report-June-2025.pdf?utm_source=openai)).

How to shop compliant, tested hemp

• Delta‑9 THC ≤ 0.3 % dry weight per RCW 15.140.020
• Only licensed cannabis retailers may sell products with detectable THC (E2SSB 5367, effective 7/23/2023)
• Hemp producers must be licensed by WSDA under RCW 15.140.060
• All hemp must be tested with measurement of uncertainty per WSDA rules
• Synthetic or isomerized THC (e.g. delta‑8) is prohibited in unlicensed sales

Helpful resource: Learn more about Washington, USA

Educational content only — not legal or medical advice.

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