memes

It doesn't take much land to be self sufficient in vegetables if you are willing to limit your vegetable choices to your climate and to preserve them. However vegetables are the by far easiest part of being self sufficient. Getting your carbs and your proteins is far harder. Say you eat around 300g of grain per day. Then you would need about 219 square meters of grain if you have a typical organic yield. Replace your carbs with potato and maybe you can reduce that by 50%, but then you run into the risk of potato harvest failing, which they often do in organic systems. For proteins you would either have to have animals plus area to grow their feed, or grow a huge area on par with the grains to get enough shelling beans to meet your protein needs. But vegetables? Just a dozen or two square meters should be enough.