Vermont is the first state to legalize adults’ possession and limited cultivation of marijuana legislatively Marijuana will be legal in nine states and the nation’s capital when Vermont law takes effect MONTPELIER, Vt. — On Monday, Gov. Phil Scott officially signed a bill into law that makes marijuana legal for adults in Vermont. H. 511 eliminates Vermont’s civil penalty for possessing one ounce or less of marijuana and removes penalties for possession of up to two mature marijuana plants and ...