Something I would recommend if one wants to try to really supplement one's food with a garden is to keep in mind things that store well without power, and for those with little time for canning and preserving; consider growing root vegetables as staple foods. Potatos have big yields for the space they occupy, and only need a cool dark place to store. Around here, anybody who grows a few rows of potatos ends up with more than enough for the winter. We seldom buy potatos because we're usually gifted with enough to last the winter.