Hemp may not be planted within 3 miles of a Department of Health Medical Marijuana Grower-Processor. 24, 2023, 38 states, three territories and the District of Columbia allow the medical use of cannabis products.Initiation of criminal proceedings; twice in jeopardy;. Historically, Pennsylvania has not been considered a "state to watch" regarding the legalization of recreational adult use cannabis. Legalizing cannabis for adults has been a wise investment. The legalization of adult use cannabis does not alter the state's medical cannabis pilot program. Restoration of firearm rights for offenses under prior laws of this Commonwealth. How can I get medical marijuana in Pennsylvania? Colorado and Washington State legalize recreational marijuana. The law legalizes, regulates, and taxes cannabis sales for adults' use.