Colorado voters will decide this fall whether to legalize marijuana for recreational use when the state becomes the second in the nation to put such a proposal on ballots this year, reports the Associated Press.

The Secretary of State's Office said Monday that supporters of the legalization initiative collected enough signatures to get their measure before voters, meaning Colorado will join Washington state in putting a recreational pot question on November ballots.

Voters will be asked whether adults older than 21 should be allowed to use marijuana even without a doctor's recommendation. The measure would allow adults to have up to 1 ounce of marijuana or six marijuana plants. The proposal also allows for commercial pot sales, though cities and counties would have permission to ban marijuana sales if they chose.