Ah, we are using different assumptions, Mike. I am always thinking in terms of where we end up, while you were speaking in terms of the transition period.

I still would think the "Victory Garden" would be used for supplementing the diet while moving to providing the entire diet as collapse gets further along. (I use collapse here not in terms of the end of civilization, but in the sense of breaking down and ending up something very different than it is now - almost certainly more localized, less regulated and possibly with federal governments that are but a shell of what they are now.)

There are people producing enough food in 4-5,000 sq ft. to keep one person fed for a year. Some homes have that much sq. footage! Turing lawns, parks, greenways and parking lots into gardens might provide enough to sustain small communities. I am doubtful this would work in large American cities. LArge cities will have o crate new ways to feed their people, depopulate, or find a way to provide value to the rural areas such that they are willing to provide food for them.

Cheers