We can argue about when, but someday within several decades, oil and the plentiful super-market food we take for granted will be in short supply and/or very expensive. We must all start immediately to grow as much of our own food as possible. This is the fun part and is the subject of a vast popular movement highlighted by innumerable books, magazines, and web sites. Square-foot gardening, raised beds, and permaculture are the new rage. We don’t need thirty-million acres of lawns. Flowers aren’t very filling either.