In the afternoon I used Live search to find more info on ‘grow medical marijuana’ so I could post it into ‘eating marijuana’. And this is one of the many results:

While smoking marijuana may be illegal throughout the county, it is in fact legal in California for medical purposes. … It may appear as though this school and its attendees consist of people either looking to make a quick dollar or learn to grow marijuana plants themselves while a voiding persecution….

Not exactly what I was looking for, but still a interesting read.