I have been gardening for seven years, I learned a lot and still have to learn a lot.
For the moment my vegetable garden is about 100 m².
If you haven’t gardened before, I doubt you will have any succes when the SHTF.
Very good infomation on the chart, thanks for sharing.
The father of my brother in law grew all the vegetables for his family of 6 on 400 m².