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Re:Fruit Walls: Urban Farming in the 1600s (2015) by supermatt on Sunday February 23, 2020 @09:51AM (#22397051)
Oh yeah, no doubt. That 500 sq ft would be for 1 under normal circumstances, and would need to be heavily optimised for supporting 4 people.

As it stands US Department of Agriculture says that 120 sq m is enough for a family of 3 - thats using conventional gardening techniques.

Re:Fruit Walls: Urban Farming in the 1600s (2015) by asdkjh345 on Sunday February 23, 2020 @10:40AM (#22397333)
The USDA recommendation is just to provide the small amount of vegetables a family normally eats, not to provide all their calories. 50 sq m is absolutely tiny, and even with the most calorically dense crops like a 300 bushel/acre corn crop, that 50 sq m is producing less than 1000 calories a day, it won't support anyone.