I love it when a guy who does not live in California is telling us how it is in California!
This is the California forum, and we are talking about California law.
Prop 215 was voted in by the people, and it did not have any plant number limits. SB420 was done by the legislature, and it included the 6 mature/12 immature plants as a guideline for law enforcement. My city has a local ordinance that allows for 24 plants per patient or 48 for a caregiver. A local ordinance can allow for more than SB420 but not less.
Since then, the Kelly decision appellate court decided that all plant numbers limits are unconstitutional because the people did not vote on them, and Prop 215 was voted in without plant number limits.