Two initiatives for the May ballot have already been qualified. On Wednesday, the Los Angeles City Council will decide if a third should join them.
Language for the third plan is still being worked out.
The proposals would regulate, and in some cases, limit the number of dispensaries in L.A. There are currently hundreds of clinics in the city.
The council approved a total ban on clinics last year, but that ban was rescinded after supporters qualified a ballot measure to overturn it.
The clinics still face federal and state prohibitions against marijuana sales.
The Associated Press contributed to this report.