What is self-sufficiency? The definition is needing no outside help in satisfying one's basic needs, especially with regard to the production of food. Over the years, I’ve read many books and articles claiming that food self-sufficiency is possible on a quarter acre. From my own experience, I have to say I disagree. So how much space is necessary to be self-sufficient in regards to food? I hope to enlighten you to a more reality based self-sufficient garden space needs based on experience.