Washington State Hemp & Hemp‑Derived Cannabinoid Laws
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This guide provides an educational overview of Washington State’s hemp and hemp‑derived cannabinoid laws as of June 1, 2026. It is for informational purposes only and does not constitute legal advice.
Washington, USA hemp laws: quick overview
Washington’s hemp program is codified in RCW 15.140 (effective 2019 c 158), which defines hemp as Cannabis sativa L. with delta‑9 THC concentration not exceeding 0.3% on a dry weight basis (RCW 15.140.020) ([agr.wa.gov](https://agr.wa.gov/departments/agricultural-products/hemp/hemp-faq?utm_source=openai)). The department must issue hemp producer licenses (RCW 15.140.060) and may register processors (voluntary) ([agr.wa.gov](https://agr.wa.gov/departments/agricultural-products/hemp/hemp-faq?utm_source=openai)). Post‑harvest testing protocols are required per RCW 15.140.050, aligned with USDA rules ([app.leg.wa.gov](https://app.leg.wa.gov/RCW/default.aspx?cite=15.140&full=true&utm_source=openai)). Washington prohibits ingestible cannabinoid oils such as CBD tinctures, gummies, foods, and beverages; only non‑ingestible topicals and hemp seed‑derived GRAS ingredients (e.g., hulled seeds, seed oil, protein) are allowed in food (WSDA Food Safety) ([agr.wa.gov](https://agr.wa.gov/departments/agricultural-products/hemp?utm_source=openai)). The WSLCB issued a policy statement (PS21‑01, April 2021) classifying chemically synthesized Δ‑8 THC and other isomers as Schedule I controlled substances under RCW 69.50.204, effectively banning their manufacture, sale, and possession in Washington ([washingtonstatecannabis.org](https://washingtonstatecannabis.org/thc/delta-8?utm_source=openai)). WSDA sampling and testing protocols require sampling within 30 days prior to harvest, with fees and procedures outlined in WAC 16‑306‑160 and related sections ([agr.wa.gov](https://agr.wa.gov/departments/agricultural-products/hemp/hemp-faq?utm_source=openai)). Hemp extract certification for export was established via emergency rule effective November 30, 2021 (CR‑103E), but expired March 30, 2022 ([agr.wa.gov](https://agr.wa.gov/departments/food-safety/food-safety/hemp-and-hemp-extract-certification?utm_source=openai)).
Shipping guidance
Inbound and outbound shipments of hemp plant material are allowed; WSDA Plant Services handles certification, inspection, and export/import factsheets are available ([agr.wa.gov](https://agr.wa.gov/departments/agricultural-products/hemp/hemp-faq?utm_source=openai)). No age verification or retailer registration is required for shipping hemp plant material. Retailers of ingestible cannabinoid products are not permitted, so shipping such products is prohibited.
Testing & COA guidance
WSDA requires sampling within 30 days pre‑harvest by inspectors; testing must follow WAC 16‑306 protocols (e.g., delta‑9 THC measurement, uncertainty margin) ([agr.wa.gov](https://agr.wa.gov/departments/agricultural-products/hemp/hemp-faq?utm_source=openai)). Laboratories must be department‑approved; COA retention details not specified. Voluntary testing for human consumption includes pesticide, mycotoxin, heavy metals panels per WAC 16‑306‑100 ([agr.wa.gov](https://agr.wa.gov/departments/agricultural-products/hemp/hemp-faq?utm_source=openai)).
What to buy
Allowed: hemp biomass with ≤ 0.3% delta‑9 THC, non‑ingestible CBD topicals, hemp seed‑derived GRAS ingredients (hulled seeds, seed oil, protein).
What to avoid
Avoid ingestible cannabinoid oils (CBD tinctures, gummies, beverages), chemically synthesized Δ‑8 THC, Δ‑10, HHC, THC‑O, and other isomerized cannabinoids; these are banned under WSLCB policy.
How to shop compliant, tested hemp
- Delta‑9 THC in hemp must be ≤ 0.3% dry weight (RCW 15.140.020)
- Ingestible cannabinoid oils (e.g., CBD tinctures, gummies) are prohibited in food/beverages
- Hemp producers must hold WSDA hemp producer license (RCW 15.140.060)
- Hemp processors may register voluntarily but are not licensed; food processors must comply with WSDA food safety rules
- Chemically synthesized Δ‑8 THC and similar isomers are banned under WSLCB policy
- Sampling and testing protocols per WAC 16‑306 required within 30 days pre‑harvest
Helpful resource: Learn more about Washington, USA
Educational content only — not legal or medical advice.
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