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Marijuana Transportation Laws in Ohio (2025): What’s Legal Now, What’s Coming, and Your Most-Asked Questions
What’s Coming, and Your Most-Asked Questions About Transporting Marijuana In Ohio
Fast facts (2025):
Adults 21+ may possess up to 2.5 oz of cannabis (flower) or 15 g of concentrates; home grow up to 6 plants per adult / 12 per residence. Flowhub
Using or vaping in a vehicle is illegal; operating a vehicle under the influence (OVI) of cannabis is prosecuted under ORC 4511.19 with per-se THC limits. Ohio Laws
Crossing state lines with cannabis remains illegal under federal law. OAMCCC
Rules
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Sep 13, 2025