Food forest: why half a hectare isn't enough to live on

Luke's food forest: 27 years old, 14 hectares in southern Spain

Luke, aged 27, has turned a 14-hectare off-grid property in southern Spain into a food forest, and in doing so has peine an uncomfortable question: how much land do you need to live without depending on the supermarket? The answer, depending on how you look at it, ranges from half a hectare to considerably more.

The enthusiasm for permaculture clashes with the memory of the traditional family farm. A family of six got by on three hectares, four cows, pasture and water. Manure was the fertiliser and the essential animal complement. Without that, half a hectare of fruit trees looks more like a statement of intent than a subsistence plan.

Against the productivist nostalgia, rotational grazing defends intensive management. In the US, a land manager divides the plot into 15-20 zones and gets the pasture to regenerate while the livestock rotates; he ended up earning more than the owners of the cattle themselves. The capacity of a well-managed hectare, they argue, goes beyond what the classic family farm ever exploited.

The debate then shifts to who can afford the experiment. The arrival of foreign buyers has pushed up land prices in the south, and anyone dreaming of their own little plot is priced out. Self-sufficiency, ironically, is increasingly a luxury for those who already have wealth.

The closing detail is the one that unsettles: none of the most widely shared projects explains what happens to the soil when only fruit trees are planted. The ecosystem needs more than trees. Meanwhile, the half hectare remains a dream on video, not a balance sheet. The food forest sells; the arithmetic of subsistence does not.