I thank you for the time it took to write this!  I&#x27;m looking at it from the perspective of already irrigated land though.<p>Recently I&#x27;ve taken up urban harvesting.  There&#x27;s a loquat tree at a local gas station.  Out by the river there&#x27;s an orange and lemon tree. Near my office there&#x27;s an avocado tree.<p>We have mostly ornamental horticulture in urban environments. I&#x27;m suggesting it will tend to be more functional overtime as resources are strapped and people turn to more fresh, natural, and regional foods.<p>The other aspect is that it&#x27;s good for the psyche: urban harvesting is meditative and calming. There&#x27;s been a large rise in community gardens and a number of schools have set aside plots of land for it.<p>In a way, you need to categorize it with physical recreation.  Put it in the same group as say, jogging, yoga, martial arts, pickup soccer.<p>Every trajectory in rich-people&#x27;s food culture is going exactly this way.  When I introduce the idea to my peers in the 100k+ income group, something <i>clicks</i> and now they are mapping out where the trees are and some have started planting their own.<p>I routinely engage with teenagers (through aikido) and when I&#x27;ve told them about this, the reaction has been almost universal: &quot;Oh you just started doing that?  Do you know about the pomegranate tree over yonder, or the kumquat tree near this fence?&quot;<p>Those are the people that will be running the world in 2050.<p>And what about the low-income people who have succumbed to food deserts after the corporate supermarkets exited the market?  Recently, in south LA, cooperative farming initiatives have been popping up.  There&#x27;s one I saw in Lynwood and two in South Gate.  I&#x27;ve heard about a budding one in Compton.  This is the communities response to the corporate exit.<p>The change will and has always come from the people - not their possessions.