LINCOLN, Neb. - Nebraska Gov. Jim Pillen has officially signed off on the state’s first medical marijuana laws.

Pillen said in a statement Thursday that he approved recommendations from the state’s Medical Cannabis Board. The board had amended its proposal during an emergency meeting Monday after Pillen ordered members to limit how many flowering plants each cultivator can grow.

The governor reduced the number of allowed plants to 1,250, saying the change was necessary to prevent an oversupply that could fuel black-market activity.

The regulations take effect just three weeks before the board is scheduled by law to issue the first medical marijuana licenses.