Infographic: How big a backyard would you need to live off the land?

As you can see below, you'd need a heck of a lot of backyard space — about 89,050 square feet (or about 2 acres) — if your clan plans on eating fruits, grains, and veggies, dairy (via goats) meat (via pigs), eggs, and wheat-based foods (the number drops to about 1.5 acres if you cut wheat out of the equation and opt to purchase flour from a local grocery store). The infographic also shows that to live off the grid, power-wise, the typical American home consuming 11,040 kWh of electricity per year would require 375-square-feet of rooftop space to install 25 solar panels that receive a full seven hours of sunlight per day.

Interesting stuff. My question to those of you out there producing a significant amount of edibles in your own backyards: How much space do you require to feed your family (or just yourself) in a self-sufficient manner without the benefit of living on a full-blown farm? What things, due to space constraints, are outsourced? What things do you find yourself never buying at a grocery store? Two acres is a whole lot of land — backyard farming is often so romanticized that one often forgets the amount of raw space required to keep it up beyond "hobby" status — so I'm curious as to how you make it work ... tell me all about it in the comments section.

http://www.mnn.com/your-home/organic-farming-gardening/blogs/infographic-how-big-a-backyard-would-you-need-to-live-off-