I'll grant you that for the sake of discussion (although I don't think it's strictly true), but that acre doesn't have to be all in one place eh? Every bit helps.
My sister's neighbor farmed in his (San Francisco) backyard and got about 3~4 crops a year, all year round. It wasn't enough to feed their whole family but it helped.
My sister's neighbor farmed in his (San Francisco) backyard and got about 3~4 crops a year, all year round. It wasn't enough to feed their whole family but it helped.