AMENDMENTS: Yes.
Senate Bill 420, which was signed into law in October 2003 and took effect on January 1, 2004, imposes statewide guidelines outlining how much medicinal marijuana patients may grow and possess. Under the guidelines, qualified patients and/or their primary caregivers may possess no more than eight ounces of dried marijuana and/or six mature (or 12 immature) marijuana plants. However, S.B. 420 allows patients to possess larger amounts of marijuana when such quantities are recommended by a physician. The legislation also allows counties and municipalities to approve and/or maintain local ordinances permitting patients to possess larger quantities of medicinal pot than allowed under the new state guidelines.
Senate Bill 420 also mandates the California Department of State Health Services to establish a voluntary medicinal marijuana patient registry, and issue identification cards to qualified patients. To date, however, no such registry has been established.
Senate Bill 420 also grants implied legal protection to the state's medicinal marijuana dispensaries, stating, "Qualified patients, persons with valid identification cards, and the designated primary caregivers of qualified patients ... who associate within the state of California in order collectively or cooperatively to cultivate marijuana for medical purposes, shall not solely on the basis of that fact be subject to state criminal sanctions."