Here's one way to go about making a city more self-sufficient, food-wise: Start with just one crop. Once you get that one right, move on to the next one.
The San Francisco Chronicle reports that Friends of the Urban Forest is doing just that: They are mapping every Meyer lemon tree in the city, with a view to planting enough to meet the city's entire Meyer lemon needs. They estimate that a few thousand lemon trees are already in place; 12,000 is the goal.
I just hope they've checked with the bartenders and the bakers. 12,000 trees might be enough to supply the city with Meyer lemon and proseco cocktails, but what are the rest of y'all gonna have?