As you consider options for growing food on your property, you should try to stop thinking in terms of preserving what you are used to, and instead think of sustaining life. When most people think of planting a garden or growing food, they think of growing vegetables or fruit trees. The value of vegetables and fruit lies primarily in their nutrients. These nutrients prevent malnutrition and preserve health. With some planning and preservation, all vitamin and mineral requirements for life can be provided by a rather small garden, so long as the temperature, soil, and water is adequate. When aiming for sustaining life, everything changes. How many home gardeners do you know who grow grain? Grain is the staff of life. Calorically, there is no comparison between grains and vegetables. Grain requires a lot more space than vegetables, and it requires extra work (and know-how) to render it from how it grows to how it is stored and eaten. If you are going to grow wheat, barley, rye...