For city-dwellers living in condos and apartment buildings, organic gardening is still an option.
You can grow beans and tomatoes in flower pots instead of flowers. There are people growing huge gardens on the rooftops of buildings, erecting plastic coverings so essentially making greenhouses. The qualtity of vegetables grown is excellent and taste, far beyond anything in the store that's been stored for a couple of years and then shipped hundreds of miles.
You don't have to be in the country to grow vegetables of the highest quality.