Pot Shops Must Grow Dope on Premises: Calif. Court Ruling likely to shut down most storefronts By Matt Cantor, Newser User Posted Mar 2, 2012 11:11 AM CST 28 comments Comments Marijuana grows in the home of two medical marijuana patients in Medford, Ore. (AP Photo/Jeff Barnard) (Newser) – California cities can't simply ban medical marijuana shops—but the dispensaries must grow their own pot, an appeals court in the state has unanimously ruled. The city of Lake Forest had been trying to implement, in the appeals court's words, "a total bar contradicting state law" on dispensaries via a zoning law. It's the first time a court has blocked cities from instituting such pot-related zoning restrictions, but the growing requirement would put most dispensaries out of business, the Los Angeles Times notes. "I don't see how you can grow in a tiny, rented space enough pot for over 1,000 customers," said a lawyer involved in the case. The state Supreme Court has already agreed to consider a number of lower-court rulings.