Cass County, MO Public Conduct: Public Marijuana Use (2026)

, if he or she knowingly possesses marijuana or a synthetic cannabinoid, except as authorized by Chapter 579 or Chapter 195, RSMo. That exception clause means the county ordinance is written to track state law: possession that Missouri law authorizes is carved out of the county offense entirely, while possession that falls outside what state law allows remains chargeable as a county ordinance violation in Cass County's court, separate from any state prosecution. 1800 for public consumption tracks possession generally: whatever is lawfully possessed under the state exception is not a county violation, and whatever is not authorized is.

1800 is the operative county-level rule. 1830, separately criminalizes knowingly using or possessing with intent to use drug paraphernalia to plant, cultivate, manufacture, ingest or otherwise introduce a controlled substance into the body in violation of Chapter 579 or Chapter 195, RSMo. 00, with each day of continuing possession a separate offense.