Montana Hemp & Hemp‑Derived Cannabinoid Laws

This educational guide outlines Montana’s hemp and hemp‑derived cannabinoid laws as of June 1, 2026. It is for informational purposes only and not legal advice.

Montana hemp laws: quick overview

Montana law defines hemp as Cannabis sativa L. and any part thereof with a total delta‑9 THC concentration of not more than 0.3% on a dry weight basis, explicitly including derivatives, isomers, acids, salts, and salts of isomers, but excluding synthetic cannabinoids (MCA § 80‑18‑101, amended by HB 948, effective 2023) ([law.justia.com](https://law.justia.com/codes/montana/title-80/chapter-18/part-1/section-80-18-101/?utm_source=openai)). The state operates under a USDA‑approved hemp plan effective January 27, 2023, and requires licensing for cultivation and processing under MCA Title 80, Chapter 18 and ARM 4.19.101‑202 ([agr.mt.gov](https://agr.mt.gov/hemp?utm_source=openai)). In 2025, Montana enacted HB 49, signed April 7, 2025, which caps hemp‑derived THC products at 0.5 mg per serving and 2 mg per package, effective immediately, dramatically narrowing the market for intoxicating hemp edibles, beverages, and gummies ([atlrx.com](https://www.atlrx.com/blogs/delta-9/is-delta-9-legal-in-montana/?utm_source=openai)). HB 948 (2023) and MCA § 50‑32‑222 prohibit synthetic or semi‑synthetic cannabinoids such as delta‑8, delta‑10, HHC, THCP, and THCA flower, classifying them as controlled substances outside the hemp definition ([atlrx.com](https://www.atlrx.com/blogs/delta-9/is-delta-9-legal-in-montana/?utm_source=openai)). Remediation rules require that hemp lots testing above 0.3% Δ9‑THC must be remediated or destroyed; chemical extraction or dilution is no longer allowed, though fiber‑only crops with < 2.0% total THC may be remediated by removing floral material (MDA remediation rules) ([agr.mt.gov](https://www.agr.mt.gov/Topics/H-M/Hemp-Pages/Disposal-Remediation-Hemp?utm_source=openai)).

Shipping guidance

Inbound shipments of hemp products compliant with ≤ 0.3% Δ9‑THC dry weight are allowed without a Montana‑specific import permit; COAs from ISO/IEC 17025 labs and proper labeling are required. Shipments containing synthetic cannabinoids (delta‑8, HHC, etc.) face enforcement risk and stop‑sale orders ([hempdata.io](https://hempdata.io/states/montana?utm_source=openai)).

Testing & COA guidance

Licensed growers/processors must submit samples for THC testing under the USDA‑approved plan; testing includes THC levels and other compliance panels per ARM 4.19.101‑202. Remediation/disposal protocols apply for non‑compliant lots. ISO 17025 accreditation is strongly recommended though not explicitly mandated ([agr.mt.gov](https://agr.mt.gov/hemp?utm_source=openai)).

What to buy

Allowed products include raw hemp flower (≤ 0.3% Δ9‑THC), CBD oils, tinctures, topicals, beverages, gummies, vapes, and isolates that meet the 0.5 mg per serving and 2 mg per package THC caps under HB 49 ([hempdata.io](https://hempdata.io/states/montana?utm_source=openai)).

What to avoid

Avoid any products containing delta‑8, delta‑10, HHC, THCP, THCA flower, or other synthetic/semi‑synthetic cannabinoids—they are prohibited under HB 948 and MCA § 50‑32‑222. Also avoid hemp products with any detectable Δ9‑THC unless FDA‑authorized, per SB 375 (2025) ([atlrx.com](https://www.atlrx.com/blogs/delta-9/is-delta-9-legal-in-montana/?utm_source=openai)).

How to shop compliant, tested hemp

• Hemp defined as Cannabis sativa L. with ≤ 0.3% Δ9‑THC dry weight (MCA § 80‑18‑101, effective 2023)
• Hemp products capped at 0.5 mg THC per serving and 2 mg per package under HB 49 (2025)
• Synthetic/semi‑synthetic cannabinoids (e.g. delta‑8, HHC) are prohibited under HB 948 and MCA § 50‑32‑222
• Cultivation and processing require Montana Department of Agriculture hemp license (MCA Title 80, Ch. 18; ARM 4.19.101‑202)
• Remediation/disposal required for lots > 0.3% Δ9‑THC; no chemical extraction allowed (MDA rules)

Educational content only — not legal or medical advice.

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