That's awesome. If communities started to do that, then it would be more and more possible to avoid the mega-corporate chains. It has been tried before many times, including in Germany under Hitler: the idea of "Blut und Boden" – Blood and Soil – as the livelyhood of the people. But they were just trying to being back a time when it was normal for food to be locally produced. Unfortunately, Slavic Europe fell under the Marxist yoke and we had collectivized farming. Mega-corporate farms are just the capitalist version of that
But grow what you can and encourage others in your area to do so too!