BrianTexas, you would be surprised at how much fresh, top-quality food you can generate from a tiny, intensive garden. Lettuce, spinach, radishes, cucumbers, tomatoes, peppers, fresh herbs, etc. etc. etc. -- a mouth-watering variety that your local supermarket can't match, quality-wise. I have a number of friends who are doing all of this -- and in a Northern climate to boot.

But if you're looking for more land, for (say) root vegetables, beans, a handful of wheat or barley and such, you would be surprised at the possibilities. (None of which involve buying more land.)

The key to all of this is Community. Networking. Conversations across the fence that build trust. People who know you, who can talk to people they know. Six degrees of separation, as the phrase goes.

There is a lot of under-utilitzed land out there. The back-yard gardens of your neighbours who can't keep up (just share the loot!). Small land-holders or acreages that will give you 0.2 acres if you will do occasional work on the other 0.8. Farmers who have a corner that's too wet to plant in spring, but will produce all sorts of garden loot for someone with hand tools and the reliability to keep the weeds down.

(Holy cow, I'm going on and on. This is just my 2-cents' worth, FWIW. But I think it holds true. I'm one of those acreage folks. Bring a hoe, and I'll fire up the BBQ.)