New Hampshire Hemp & Hemp‑Derived Cannabinoid Laws

This guide provides educational, not legal advice, on New Hampshire’s hemp and hemp‑derived cannabinoid laws as of June 1, 2026. It highlights how state law supplements federal baselines for real‑world compliance.

New Hampshire, USA hemp laws: quick overview

New Hampshire defines “industrial hemp” under RSA 439‑A:1–2 as Cannabis sativa L. with Δ9‑THC not more than 0.3 % on a dry‑weight basis; this definition took effect July 30, 2019 ([chow420.com](https://chow420.com/hempstatelaws/new-hampshire?utm_source=openai)). In 2023, the legislature enacted RSA 439‑A:4 via HB 611 (signed August 8, 2023; effective October 9, 2023), which prohibits the sale of hemp‑derived products containing any THC isomer (including Δ8, Δ9, Δ10, THC‑O, HHC, etc.) above 0.3 % dry weight ([nh.gov](https://www.nh.gov/liquor/enforcement/documents-reports/documents/delta9-delta8-2023-01.pdf?utm_source=openai)). New Hampshire participates in the USDA Domestic Hemp Production Program rather than a state‑approved plan; thus, federal rules—including H.R. 5371’s 0.4 mg total‑THC per serving and 2 mg per container limits effective November 12, 2026—apply directly to interstate commerce ([hempdata.io](https://hempdata.io/states/new-hampshire?utm_source=openai)).

Shipping guidance

Inbound shipments of compliant hemp products (≤ 0.3 % Δ9‑THC dry weight) are allowed without a state import permit. Products must include COAs from ISO/IEC 17025‑accredited, DEA‑registered labs. Semi‑synthetic cannabinoids (Δ8, HHC, etc.) carry legal risk. Retailers do not need a separate state registration but must source from licensed suppliers and retain COAs ([hempdata.io](https://hempdata.io/states/new-hampshire?utm_source=openai)).

Testing & COA guidance

Testing must follow USDA federal plan: pre‑harvest sampling within 30 days of harvest by NHDAMF or USDA‑approved sampler; analysis by DEA‑registered, ISO/IEC 17025‑accredited labs. COAs must include Δ9‑THC, CBD, THCA, CBG, batch ID, date, lab accreditation. Results > 0.3 % but < 1.0 % trigger negligent violation remediation; > 1.0 % requires destruction ([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 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).
• Any THC isomer (Δ8, Δ9, Δ10, etc.) > 0.3 % dry weight is prohibited (RSA 439‑A:4, effective October 9, 2023).
• State operates under USDA hemp plan—no separate state serving‑size THC limits; federal H.R. 5371 applies for interstate commerce.
• Growers/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.

Helpful resource: Learn more about New Hampshire, USA

Educational content only — not legal or medical advice.

FAQ