What’s the Difference Between Marijuana and Medical Marijuana? BlogBy The Ranch PASeptember 2, 2015The recreational use of marijuana in the US began around 1910, and by 1931 it was illegal in at least 29 states. Today federal law prohibits the cultivation, possession and sale of marijuana, but some states are trying to work around that. In fact, 23 states have legalized the use of medical marijuana: Alaska Arizona…