That beautiful raised bed garden that produces
tomatoes, peppers and zucchini for you is a great means of growing. In fact, in my experience it is the best method of growing. I find nothing works better than the good old raised bed. Still, your raised bed could become a target in a survival situation. Its easy to discern and easy to attack. These beds can be cleaned out in the middle of the night.
This article takes the route of creating a survival garden as well. It focuses on using less recognizable plants and making a bit of a mess of them. The article features some great books on the topic as well as some recommendations for things to be grown. The idea of creating a mass of tangled food may seem like a silly idea until you wake up to find your garden pillaged.