Michigan Hemp & Hemp‑Derived Cannabinoid Laws
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This guide provides educational, state‑specific information on Michigan’s hemp and hemp‑derived cannabinoid laws as of July 1, 2026. It is for educational purposes only and not legal advice.
Michigan, USA hemp laws: quick overview
Michigan’s Industrial Hemp Growers Act (Public Act 220 of 2020) codified at MCL 333.29405 requires that official hemp samples be collected by MDARD prior to harvest, with growers submitting sampling requests online at least 20 days before and no earlier than 30 days prior to anticipated harvest; harvest must occur within 30 days of sampling. If total Δ9‑THC exceeds the acceptable level, the lot must be remediated or destroyed. ([michigan.gov](https://www.michigan.gov/mdard/plant-pest/plant-health/industrial-hemp/hemp-sample-testing?utm_source=openai)) Michigan defines “total Δ9‑THC” as Δ9‑THC plus 87.7% of THCA on a dry‑weight basis (MCL 333.29103), aligning with federal definitions. ([codes.findlaw.com](https://codes.findlaw.com/mi/chapter-333-health/mi-comp-laws-333-29103/?utm_source=openai)) In 2021, HB 4517 (2021 PA 56), signed July 13, 2021 and effective October 11, 2021, amended Michigan law to classify all THC isomers—including delta‑8, delta‑10, THCA—as marijuana, placing them under the Michigan Cannabis Regulatory Agency (CRA) regulatory framework. Hemp retailers may not sell these without CRA licensing. ([michigancannabis.org](https://michigancannabis.org/thc/delta-8?utm_source=openai))
Shipping guidance
Inbound shipments of hemp products containing only non‑intoxicating cannabinoids (within hemp Δ9 limits) are allowed under MDARD licensing. However, products containing delta‑8 or other THC isomers must be sold through CRA‑licensed cannabis retailers; unlicensed hemp retailers or out‑of‑state vendors may not ship delta‑8 into Michigan. ([cannabisregulations.ai](https://www.cannabisregulations.ai/state-legality/michigan-delta-8?utm_source=openai))
Testing & COA guidance
MDARD collects official pre‑harvest samples; labs must be DEA‑registered by December 31, 2024 per USDA rule. Growers receive certified reports showing total Δ9‑THC and CBD. Labs must follow Mich. Admin. Code R. 420.1002: document testing, separate hemp from marijuana samples, report results, and enter data into statewide monitoring system. ([michigan.gov](https://www.michigan.gov/mdard/plant-pest/plant-health/industrial-hemp/hemp-sample-testing?utm_source=openai))
What to buy
Non‑intoxicating hemp products that comply with Δ9‑THC ≤0.3% dry‑weight (plus measurement uncertainty) are legal. This includes CBD oils, topicals, edibles, and other hemp‑derived products without THC isomers.
What to avoid
Avoid delta‑8, delta‑10, THCA, HHC, or any intoxicating THC isomers unless purchased from CRA‑licensed cannabis dispensaries. Smokable hemp flower with THC isomers is prohibited in hemp channel.
How to shop compliant, tested hemp
- Michigan follows federal 0.3% Δ9‑THC dry‑weight limit under Industrial Hemp Growers Act (Act 220 of 2020).
- Total Δ9‑THC includes Δ9 plus 87.7% of THCA (MCL 333.29103).
- Delta‑8 and all THC isomers are regulated as marijuana under HB 4517 (2021 PA 56), effective October 11, 2021.
- Hemp must be tested via MDARD‑collected official samples; labs must be DEA‑registered by Dec 31, 2024.
- Growers must request sampling 20–30 days before harvest; harvest within 30 days of sampling (MCL 333.29405).
Helpful resource: Learn more about Michigan, USA
Educational content only — not legal or medical advice.
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