New Hampshire Hemp & Hemp‑Derived Cannabinoid Laws
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This guide provides an educational overview of New Hampshire’s hemp and hemp‑derived cannabinoid laws as of May 3, 2026. It is for informational purposes only and does not constitute legal advice.
New Hampshire, USA hemp laws: quick overview
New Hampshire defines hemp under RSA 439‑A:2 as Cannabis sativa L. with Δ9‑THC ≤ 0.3 % on a dry‑weight basis; this statute took effect July 30, 2019 ([gc.nh.gov](https://gc.nh.gov/rsa/html/XL/439-A/439-A-mrg.htm?utm_source=openai)). In 2023, RSA 439‑A:4 was added (effective October 9, 2023) to prohibit sale of hemp‑derived products containing any THC isomer variant above 0.3 % dry weight, explicitly including Δ8, Δ9, Δ10, and others ([gc.nh.gov](https://gc.nh.gov/rsa/html/XL/439-A/439-A-mrg.htm?utm_source=openai)). New Hampshire operates under the USDA Domestic Hemp Production Program (7 C.F.R. Part 990) rather than a state‑approved plan, meaning federal sampling, testing, and disposal rules apply directly ([hempdata.io](https://hempdata.io/states/new-hampshire?utm_source=openai)). The state’s Department of Agriculture, Markets and Food (NHDAMF) administers licensing and enforcement under RSA 439‑A and administrative rules Agr 3800 ([hempdata.io](https://hempdata.io/states/new-hampshire?utm_source=openai)).
Shipping guidance
Inbound shipments of compliant hemp (≤ 0.3 % Δ9‑THC) are allowed without state import permits; COAs from ISO/IEC 17025‑accredited labs are required. Semi‑synthetic cannabinoids (Δ8, HHC, etc.) carry enforcement risk. Outbound shipments must follow USDA 7 C.F.R. Part 990 documentation (lot ID, COA, grower ID) ([hempdata.io](https://hempdata.io/states/new-hampshire?utm_source=openai)).
Testing & COA guidance
Pre‑harvest sampling within 30 days of harvest must be conducted by NHDAMF or USDA‑approved sampler; testing by DEA‑registered, ISO/IEC 17025‑accredited labs is required. COAs must include Δ9‑THC, CBD, THCA, CBG, batch ID, date, lab accreditation. Results > 0.3 % but < 1 % trigger negligent violation remediation; > 1 % requires destruction under USDA plan ([hempdata.io](https://hempdata.io/states/new-hampshire?utm_source=openai)).
What to buy
Compliant hemp flower (≤ 0.3 % Δ9‑THC), CBD/CBG isolates, gummies, beverages, vapes, topicals derived from compliant hemp are legal for general retail ([hempdata.io](https://hempdata.io/states/new-hampshire?utm_source=openai)).
What to avoid
Avoid products with Δ8, Δ10, HHC, THCA flower, THCP, THC‑O, or any THC isomer variant exceeding 0.3 % dry weight—they are prohibited or legally ambiguous under RSA 439‑A:4 ([nh.gov](https://www.nh.gov/liquor/enforcement/documents-reports/documents/delta9-delta8-2023-01.pdf?utm_source=openai)).
How to shop compliant, tested hemp
- Hemp must contain ≤ 0.3 % Δ9‑THC by dry weight (RSA 439‑A:2) effective July 30, 2019.
- Products with any THC isomer > 0.3 % dry weight (including Δ8, Δ9, Δ10) are prohibited (RSA 439‑A:4, eff. Oct 9, 2023).
- New Hampshire operates under USDA hemp plan—no separate state serving‑size THC limits; federal H.R. 5371 applies for interstate commerce.
- Growers and processors must be licensed by NHDAMF under RSA 439‑A and Agr 3800 rules.
- Pre‑harvest sampling and testing by DEA‑registered, ISO/IEC 17025 labs required under USDA plan.
- Semi‑synthetic cannabinoids (Δ8, Δ10, HHC, THCA flower) are legally restricted or ambiguous.
Helpful resource: Learn more about New Hampshire, USA
Educational content only — not legal or medical advice.
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