New Hampshire Hemp & Hemp‑Derived Cannabinoid Laws
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This guide provides educational‑only information on New Hampshire’s hemp and hemp‑derived cannabinoid laws as of July 1 2026. It is not legal advice.
New Hampshire, USA hemp laws: quick overview
New Hampshire defines industrial hemp in RSA 439‑A:2 as Cannabis sativa L. with delta‑9‑THC not more than 0.3 % on a dry weight basis; this definition took effect July 30 2019 (2019, 306:2) ([gc.nh.gov](https://www.gc.nh.gov/rsa/html/XL/439-A/439-A-mrg.htm?utm_source=openai)). In 2023, HB 611 (Chapter 237, Laws of 2023), effective October 9 2023, added RSA 439‑A:4, which explicitly prohibits the sale of hemp‑derived products containing natural or synthetic THC greater than 0.3 % dry weight, including delta‑8, delta‑9, or any other THC isomer variant ([gc.nh.gov](https://www.gc.nh.gov/rsa/html/XL/439-A/439-A-mrg.htm?utm_source=openai)). New Hampshire has not established its own per‑serving or per‑container THC milligram limits; instead, federal H.R. 5371’s total‑THC cap (0.4 mg per container) applies for interstate commerce beginning November 12 2026 ([hempdata.io](https://hempdata.io/q/is-delta-9-thc-legal-in-new-hampshire?utm_source=openai)).
Shipping guidance
Inbound shipments of hemp‑derived products are allowed only if the product contains no THC isomer above 0.3 % dry weight per RSA 439‑A:4. No state‑specific age verification or retailer registration is required for shipping; however, retailers must source from compliant licensed growers/processors under the USDA plan ([legalclarity.org](https://legalclarity.org/is-cbd-legal-in-new-hampshire-nh-laws-and-regulations/?utm_source=openai)).
Testing & COA guidance
Hemp must be tested under the USDA hemp plan by DEA‑registered, ISO/IEC 17025‑accredited labs; pre‑harvest sampling and testing are required. If THC exceeds 0.3 % but is under 1 %, it triggers a negligent violation remediation; if ≥ 1 %, crop destruction is required ([chow420.com](https://chow420.com/hempstatelaws/new-hampshire?utm_source=openai)). COAs must include Δ9‑THC and other cannabinoids as required by USDA rules.
What to buy
Compliant hemp flower (≤ 0.3 % Δ9‑THC), CBD/CBG isolates, tinctures, topicals, vapes, beverages, and gummies derived from compliant hemp are legal for general retail ([chow420.com](https://chow420.com/hempstatelaws/new-hampshire?utm_source=openai)).
What to avoid
Avoid any product containing Δ8, Δ10, THCA flower, HHC, THC‑O, or any THC isomer variant exceeding 0.3 % dry weight—they are prohibited under RSA 439‑A:4 ([chow420.com](https://chow420.com/hempstatelaws/new-hampshire?utm_source=openai)).
How to shop compliant, tested hemp
- Hemp defined as ≤ 0.3 % Δ9‑THC dry weight under RSA 439‑A:2 (eff. July 30 2019)
- Sale of any hemp‑derived product with any THC isomer > 0.3 % dry weight prohibited under RSA 439‑A:4 (eff. October 9 2023)
- No state per‑serving or per‑container THC milligram limits; federal H.R. 5371 applies for interstate commerce starting November 12 2026
- Delta‑8, delta‑10, THCA, HHC, THC‑O, and other isomers are banned if exceeding 0.3 % dry weight
- Hemp flower ≤ 0.3 % Δ9‑THC is legal; smokable hemp flower is permitted if compliant
Helpful resource: Learn more about New Hampshire, USA
Educational content only — not legal or medical advice.
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