Depends, as soon as you get into the exurbs where plots of land range from 1 to 5 acres, you can start growing a significant % of your caloric needs on your land.
Not with lettuce or fruits, of course, but with potatoes/beans and gourds likely.
Sure you can but that’s not necessarily what people with large lawns are going for. Also a lot of the areas like that are completely unsuitable for growing food
Not with lettuce or fruits, of course, but with potatoes/beans and gourds likely.