The possession and distribution of marijuana has been legalized in many states, but in South Carolina, such actions are still very much illegal. So, what are the marijuana laws and punishments in South Carolina? Possession: It is considered a misdemeanor to possess even less than one ounce of cannabis. Punishment exposure for First Time Offenders: 1oz or less: Fine of $100 to $200 or up to 30 days in prison, misdemeanor Over 1oz: Fine of $1000 and/or up to 6 months in prison,