Brown made his comments Sunday during an appearance on NBC's Meet the Press. He was asked whether legalizing marijuana was a good or bad idea for California.
Brown said the state already has medical marijuana which gets very close to what Colorado and Washington have.
"I'd really like those two states to show us how it's going to work. The problem with anything, a certain amount is okay but there is a tendency to go to extremes. And all of a sudden if there's advertising and legitimacy, how many people can get stoned and still have a great state or a great nation. The world's a pretty dangerous, very competitive. I think we need to stay alert."
In a wide-ranging interview Brown also discussed California's drought problems, climate change and his future political career.
Republican gubernatorial candidate Neel Kashkari is up with a new TV ad that criticizes Democratic Governor Jerry Brown.
California is tapping into reserves to pay for the cost of fighting wildfires.
The official portrait of Former California Governor Arnold Schwarzenegger has been unveiled and historian says Schwarzenegger’s image reflects the changing nature of gubernatorial portraits.
UPDATED: Gubernatorial candidates Jerry Brown and Neel Kashkari debated Thursday night. Watch a replay here, or listen to a reply at 9 a.m. Friday on the News Station, in place of Insight.
California’s earthquake early warning system is up and running – but there’s no money or infrastructure to distribute alerts to the general public yet. A conference at UC Berkeley Wednesday discussed the issue.