SD SB 39 (2026) — Hemp-Derived Intoxicant Restrictions + Industrial Hemp Repeal

Last verified: May 2026

What SB 39 Did

SB 39, signed by Gov. Rhoden in March 2026, accomplished two related but distinct objectives:

1. Hemp-Derived Intoxicant Restrictions

SB 39 restricts hemp-derived intoxicating cannabinoids:

• Delta-8 THC — isomerized from CBD; psychoactive at moderate doses.
• Delta-10 THC — another psychoactive isomer.
• THC-O acetate — a synthetic acetate ester; potent psychoactive.
• HHC (hexahydrocannabinol) — hydrogenated cannabinoid; psychoactive.
• THCP — tetrahydrocannabiphorol, a high-potency cannabinoid.

These products had become widely available at SD gas stations, vape shops, and CBD-specialty stores under the 2018 federal Farm Bill’s hemp-definition gray zone. SB 39 brings SD law into line with the federal hemp-cliff direction (Public Law 119-37 Section 781, effective Nov 12, 2026).

2. Industrial Hemp Licensing Repeal

SB 39 also repealed the state’s industrial hemp licensing program. The SD Department of Agriculture and Natural Resources had administered the state hemp-licensing framework since the 2018 federal Farm Bill enabled state hemp programs. SB 39’s repeal means hemp producers in SD must now consult the USDA Domestic Hemp Production Program for federal licensing pathways.

Why the Combined Approach

The combination of intoxicant-restriction + state-program repeal reflects:

• Federal-cliff anticipation. Public Law 119-37 Section 781 (Trump signed Nov 12, 2025; effective Nov 12, 2026) federally redefines hemp by total-THC standard. SB 39 anticipates the federal direction.
• Industry constituency. SD’s state-licensed hemp industry was modest. Repealing the state program reduces administrative burden on SD-DOA without major economic disruption.
• Cannabis-policy coherence. Restricting hemp-derived intoxicants protects the IM 26 medical-cannabis program from gray-market competition.
• Federal-relationship clarity. USDA federal program provides regulatory clarity that state-program preemption questions don’t.

The November 12, 2026 Federal Hemp Cliff

SB 39 stacks with the federal hemp cliff. Public Law 119-37 Section 781, signed by President Trump on November 12, 2025, takes effect November 12, 2026. The federal cliff redefines hemp by total-THC standard:

• Total THC = delta-9 THC + 0.877 × THCA ≤ 0.3% by dry weight.
• 0.4 mg total THC per finished-product container cap.

The federal cliff effectively eliminates hemp-derived intoxicants nationwide. SB 39 brings SD ahead of the federal effective date and avoids potential 2026-7-month gap during which delta-8 and similar products would have been state-legal but federally-soon-illegal.

Comparison with Other Southern States

SD’s SB 39 is part of a broader 2025–2026 wave of state-level hemp-restriction bills:

• Alabama HB 445 (May 2025) — smokable hemp Class C felony; synthetic Delta-8/HHC banned; ABC liquor-store-only distribution. Subject of Mellow Fellow Fun v. Ivey + Marshall federal-preemption challenge.
• Arkansas Act 629 (2023) and Act 934 (2025) — hemp-intoxicant ban; subject of Bio Gen v. Sanders 8th Circuit reversal (July 1, 2025).
• Georgia SB 494 (2024) and SB 33 (2026 pending) — total-THC closure plus synthetic-hemp ban.
• Tennessee, Mississippi, Louisiana — various 2025–2026 hemp-restriction proposals at varying stages.

SD’s SB 39 is among the cleaner combined approaches: state-program repeal + intoxicant-restriction in a single bill avoiding the procedural complexity of separated state-program-update and intoxicant-ban bills.

Industry Impact

SB 39’s effect on SD operators:

• Gas-station and vape-shop pull. SD-located retail outlets must remove restricted hemp-derived intoxicant products from shelves.
• Inventory writedowns. Producers and distributors face inventory writedowns on smokable-hemp and synthetic-hemp products that became unsaleable.
• Workforce displacement. Vape-shop and CBD-specialty-store employment in SD has declined materially since SB 39 took effect.
• Continued out-of-state online sales. SD residents have pivoted to interstate online purchase from out-of-state retailers (which SD law cannot directly regulate).
• State industrial hemp program closure. Active SD hemp licensees must transition to USDA federal licensing or wind down.

Cross-Border Implications

SD residents seeking hemp-derived intoxicants now face options:

• Interstate online order. Subject to federal interstate-transport prohibition under 21 U.S.C. § 841 (cannabis) and federal-cliff provisions for hemp.
• Cross-border purchase in MN, MT. Subject to state-line transport prohibition.
• State-program medical cannabis. Available under IM 26 with practitioner certification + cardholder registration.

The federal cliff (effective Nov 12, 2026) further constrains the available pathways nationally.

Practical Notes

• SB 39 is in effect as of March 2026. SD-located hemp-derived intoxicant retail is substantially restricted.
• USDA federal hemp program. Hemp producers must transition to federal licensing.
• The federal cliff is the bigger wave. Nov 12, 2026 effective date affects national hemp-derived intoxicant industry.
• Compassion-Act-equivalent medical program is the principal alternative. Patients with qualifying conditions may pursue IM 26 registration.

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