How to Buy THCP in South Dakota (Legally & Safely)
Last Updated: May 12, 2026
Quick Answer: THCP is banned in South Dakota. Governor Kristi Noem signed House Bill 1125 in March 2024, explicitly prohibiting the production, sale, and distribution of chemically modified hemp cannabinoids including THCP, Delta-8, Delta-10, HHC, and any other THC isomer, analog, or derivative. Full enforcement began July 14, 2025. Violations are treated as Class 2 misdemeanors, with each individual product package constituting a separate offense. South Dakota residents cannot legally purchase THCP through any retail or online channel.
Is THCP Legal in South Dakota?
No. THCP has been explicitly banned in South Dakota since July 1, 2024, with active enforcement beginning July 14, 2025.
Governor Kristi Noem signed House Bill 1125 in March 2024, amending South Dakota Codified Law (SDCL 34-20B-119) to prohibit the manufacture, sale, and distribution of “chemically modified or converted industrial hemp.” The law names THCP, Delta-8 THC, Delta-9 THC derived from hemp, Delta-10 THC, THC-O-acetate, HHC, and “any other THC isomer, analog, or derivative” of industrial hemp as banned substances.
The legislation was a direct response to the proliferation of intoxicating hemp products in South Dakota smoke shops, gas stations, and convenience stores — products that lawmakers viewed as exploiting the 2018 Farm Bill’s focus on Delta-9 THC content rather than other psychoactive cannabinoids. South Dakota Attorney General Marty Jackley was among 38 state attorneys general who urged Congress to close the hemp loophole, calling the products “dangerous chemicals marketed to minors.”
Enforcement is active and serious. The AG’s office notified retailers in mid-2025 that each individual product package found in violation constitutes a separate Class 2 misdemeanor. Summer 2025 saw law enforcement conduct sting operations at smoke shops across the state.
Key Takeaways
- THCP explicitly banned under South Dakota House Bill 1125, signed March 2024, effective July 1, 2024
- Active enforcement began July 14, 2025 — each product package in violation is a separate Class 2 misdemeanor
- The ban covers all chemically modified cannabinoids: THCP, Delta-8, Delta-10, HHC, THC-O, and any THC isomer, analog, or derivative
- Online orders to South Dakota addresses are not compliant — reputable retailers including Mellow Fellow do not ship THCP to South Dakota
- Non-intoxicating hemp products (CBD, CBG, CBN from natural extraction) remain legal
- The federal enforcement deadline under P.L. 119-37 adds a further layer, reclassifying THCP as Schedule I federally on November 12, 2026
What South Dakota’s Ban Covers
House Bill 1125 amended SDCL 34-20B-119 to prohibit two categories of conduct. No person or entity may chemically modify or convert industrial hemp or engage in any process that converts CBD into Delta-8, Delta-9, Delta-10, or any other THC isomer, analog, or derivative. And no person or entity may sell or distribute industrial hemp or hemp products that contain chemically derived cannabinoids or cannabinoids created through chemical modification of a hemp extract.
The law specifically names: Delta-8 THC, Delta-9 THC derived from hemp, Delta-10 THC, THC-O-acetate, HHC, THCP, and any other THC isomer, analog, or derivative.
One narrow exception exists: cannabinoids produced through decarboxylation from a naturally occurring cannabinoid acid without a chemical catalyst are not covered. This means naturally derived Delta-9 THC products from hemp plants meeting the 0.3% threshold are still permitted. However, commercial THCP production relies entirely on chemical conversion of CBD — it cannot be cost-effectively extracted directly from hemp plants where it occurs only in trace amounts. THCP has no practical pathway to compliance under South Dakota law.
| Cannabinoid | South Dakota Status | Enforcement |
|---|---|---|
| THCP | Banned (HB 1125) | Active since July 14, 2025 |
| Delta-8 THC | Banned (HB 1125) | Active since July 14, 2025 |
| Delta-10 THC | Banned (HB 1125) | Active since July 14, 2025 |
| HHC | Banned (HB 1125) | Active since July 14, 2025 |
| THC-O-acetate | Banned (HB 1125) | Active since July 14, 2025 |
| Hemp-derived Delta-9 THC | Banned (chemically derived) | Active since July 14, 2025 |
| Natural Delta-9 THC (plant-derived) | Legal (below 0.3% threshold) | Standard hemp compliance |
| CBD (naturally extracted) | Legal | Standard hemp compliance |
| CBG, CBN (natural) | Legal | Standard hemp compliance |
Enforcement: What It Looks Like in Practice
South Dakota’s ban was on the books from July 2024 but enforcement was initially limited by the need for laboratory testing to distinguish synthetic from natural cannabinoids. That changed in July 2025.
Attorney General Jackley sent formal notices to retailers in June 2025 that enforcement would begin July 14. Law enforcement agencies conducted sting operations at smoke shops statewide during summer 2025, seizing products and issuing misdemeanor charges. The AG framed the campaign as protecting public safety, particularly for minors, characterizing intoxicating hemp products as “dangerous chemicals” sold without adequate age controls.
The penalty structure is significant: each individual product package violating SDCL 34-20B-119 is a separate Class 2 misdemeanor. A retailer with 50 non-compliant products on the shelf faces 50 separate misdemeanor charges. This has effectively driven THCP and similar products out of licensed retail in South Dakota.
The Federal Deadline Also Applies to South Dakota
South Dakota’s state ban predates the federal action by over a year. But P.L. 119-37 (signed November 12, 2025) adds a second layer: converted cannabinoids like THCP will become Schedule I controlled substances under federal law on November 12, 2026, unless Congress acts to repeal or delay Section 781.
South Dakota Attorney General Jackley was among the coalition of 38 state attorneys general who urged Congress to close the hemp loophole, so the state’s position aligns with the federal direction. Legislative proposals to replace the federal ban with a regulated framework are active as of May 2026 but have not passed.
What Hemp Products Are Still Legal in South Dakota?
South Dakota’s law targets chemically derived cannabinoids specifically, preserving access to naturally derived non-intoxicating hemp products.
Legal under current South Dakota law:
- CBD products derived through natural extraction (not chemical conversion)
- CBG and CBN products from natural extraction
- Plant-derived Delta-9 THC products meeting the 0.3% dry weight threshold
- Hemp topicals and non-intoxicating wellness products
- Industrial hemp products (fiber, grain, seed oil)
Available through South Dakota’s medical marijuana program:
- Medical cannabis products for qualifying patients through licensed dispensaries
- Recreational cannabis is not legal in South Dakota
Legal Alternatives Available Through Mellow Fellow
Mellow Fellow does not ship THCP to South Dakota and complies fully with state law under HB 1125. For South Dakota residents seeking compliant non-intoxicating hemp options, Mellow Fellow’s CBD collection and wellness gummies include naturally extracted CBD, CBG, and CBN formulations for sleep, recovery, and daily wellness — all within South Dakota’s permitted cannabinoid framework.
For residents of states where THCP remains legal, the full THCP collection, THCP disposable vapes, and THCP Bursts edibles are available with pharmacist formulation and third-party lab testing. Confirm your state’s shipping eligibility at mellowfellow.fun/pages/shipping-restrictions.
Frequently Asked Questions About THCP in South Dakota
Is THCP legal in South Dakota in 2026?
No. THCP is banned under House Bill 1125, signed by Governor Noem in March 2024 and actively enforced since July 14, 2025. The law prohibits production, sale, and distribution of THCP and all other chemically derived cannabinoids.
When did South Dakota ban THCP?
Governor Noem signed HB 1125 in March 2024, with the law taking effect July 1, 2024. Full active enforcement by law enforcement began July 14, 2025.
What is the penalty for selling THCP in South Dakota?
Each individual product package found in violation of SDCL 34-20B-119 constitutes a separate Class 2 misdemeanor. A retailer found with multiple non-compliant products faces multiple simultaneous misdemeanor charges.
Can I order THCP online and ship it to South Dakota?
No. While HB 1125 focuses on production and sale rather than possession, online retailers cannot ship THCP to South Dakota in compliance with state law. Reputable retailers including Mellow Fellow do not ship THCP to South Dakota addresses.
Can I still buy Delta-8 or HHC in South Dakota?
No. Delta-8, Delta-10, HHC, and THC-O are all explicitly named in House Bill 1125 and have been banned alongside THCP under the same legislation.
What hemp products can I still buy in South Dakota?
Naturally extracted CBD, CBG, and CBN products remain legal. Plant-derived Delta-9 THC products meeting the 0.3% dry weight threshold are also permitted. South Dakota has a medical marijuana program for qualifying patients through licensed dispensaries.
Does THCP show up on a drug test?
Yes. THCP is structurally similar to Delta-9 THC and will trigger positive results on standard drug tests. Tests cannot distinguish between THCP and other THC metabolites.
Will THCP become legal again in South Dakota?
There are no active legislative efforts to reverse HB 1125 in South Dakota as of May 2026. The state’s AG supported the federal effort to close the hemp loophole, and the political environment in South Dakota remains strongly aligned with the ban.
Summary: THCP in South Dakota 2026
South Dakota explicitly named and banned THCP in March 2024 under House Bill 1125 — one of the most direct and comprehensive state-level bans in the country. With active enforcement launched in July 2025 and a per-product misdemeanor penalty structure, the law has effectively eliminated THCP from the legal retail landscape in the state. The federal enforcement deadline under P.L. 119-37 further aligns with South Dakota’s position.
For the current THCP legal status across all 50 states, see the full THCP state-by-state guide. For non-intoxicating hemp products available in South Dakota, browse Mellow Fellow’s CBD collection or check shipping eligibility at mellowfellow.fun/pages/shipping-restrictions.
Sources Used for This Article
South Dakota House Bill 1125 (2024) — SDCL 34-20B-119 https://www.mykxlg.com/news/local/south-dakota-bans-intoxicating-hemp-products-including-delta–thc-products/article_851aec78-ea34-11ee-9426-37044a125dfb.html
South Dakota to Crack Down on Hemp Product Sales Starting July 14 — Cannabis Business Times (2025) https://www.cannabisbusinesstimes.com/us-states/south-dakota/news/15748994/south-dakota-to-crack-down-on-hemp-product-sales-starting-july-14
South Dakota Governor Signs Bill Banning Intoxicating Hemp Derivatives — Hemp Today (2024) https://hemptoday.net/south-dakota-gov-kristi-noem-signs-bill-banning-intoxicating-hemp-products/
South Dakota 2025: From HB 1125 to Summer Seizures — Cannabis Regulations AI (2025) https://www.cannabisregulations.ai/cannabis-and-hemp-regulations-compliance-ai-blog/south-dakota-hb1125-2025-hemp-seizures-compliance
South Dakota Cannabis and Hemp Laws 2026 — Burning Daily (2026) https://burningdaily.com/blogs/learn/south-dakota-cannabis-hemp-laws
Hemp Products Will Be Ripped Away by Federal Legislation — South Dakota Searchlight (2025) https://southdakotasearchlight.com/2025/11/12/hemp-products-will-be-ripped-away-by-federal-legislation-sd-businesses-fear/
Congress Enacts Hemp THC Products Ban — Saul Ewing LLP (2025) https://www.saul.com/insights/alert/congress-enacts-hemp-thc-products-ban-what-new-federal-restrictions-mean-industry
Is THCP Legal in Your State 2026 Guide — Mellow Fellow https://mellowfellow.fun/blogs/learn/is-thcp-legal-in-your-state
A Novel Phytocannabinoid Isolated from Cannabis sativa with Cannabimimetic Activity Higher than Delta-9-THC (2019) https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6997041/
Disclaimer: This article provides educational information only and does not constitute legal advice. South Dakota’s ban on intoxicating hemp cannabinoids has been actively enforced since July 2025. Always verify current regulations before purchasing, selling, or transporting any hemp-derived cannabinoid products in South Dakota.