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Hemp Laws: Montana vs South Dakota
Side-by-side comparison of hemp compound laws
Montana and South Dakota have similar hemp laws, differing on just 2 of 8 compounds. Key differences: Delta-9 THC (Hemp) is legal with restrictions in Montana but fully legal in South Dakota. THCA is banned in Montana but in a legal gray area in South Dakota. Both states have the same Delta-8 THC status: banned. The 2026 federal hemp ban will have low impact on Montana and high impact on South Dakota. Shipping rules differ: inbound hemp shipping is legal with restrictions in Montana vs. fully legal in South Dakota.
| Compound | Montana | South Dakota |
|---|---|---|
| Delta-8 THC | ❌Banned | ❌Banned |
| Delta-9 THC (Hemp) | ⚠️Restricted | ✅Legal |
| CBD | ✅Legal | ✅Legal |
| THCA | ❌Banned | 🔶Gray Area |
| HHC | ❌Banned | ❌Banned |
| Delta-10 THC | ❌Banned | ❌Banned |
| THC-O | ❌Banned | ❌Banned |
| THCP | ❌Banned | ❌Banned |