Self-sufficiency for five people requires 5 to 10 hectares

Five people on one farm: 5 hectares without livestock, 10 with cows

Put five people on a farm and remove the supermarket. How much land is needed so they eat fruit, vegetables, eggs, milk, and meat all year round? The question seems like a calculator exercise but ends up being a problem of physics, climate, and above all, work. Figures used by those who have been trying this for years range from 5 to 10 hectares, and none contemplate life as we know it.

How many hectares does a family need to be self-sufficient?

The most widespread consensus in self-sufficiency circles speaks of 2 hectares per person. For five, that would be ten. It is a starting point, not a law. Those who give up large livestock — only poultry and rabbits — reduce the bill to about 5 hectares. As soon as a cow enters the equation, the area doubles or nearly so. And some challenge these figures based on contrary experience: a well-managed vegetable garden yields food for seven people from just 500 square meters, provided limited variety and seasonality are accepted.

That is where the real problem starts. Self-sufficiency is not a production peak in July. It is eating in February too.

Land is not the expensive part: labor is

A calculation circulating among those who have tested the model states that producing the food consumed by a family costs about 30 times more labor than buying it with Spain's minimum wage. It sounds exaggerated until you look at recent history: rural families had gardens and animals, but still worked as stonemasons or bricklayers. Historical subsistence farming was almost never full self-sufficiency; it was a supplement.

In short, nobody lived off the garden. They lived with the garden.

Climate and water weigh more than square meters

It is not the same having five hectares of arid land in Los Zain (a dry region in Spain) versus half a hectare in a fertile delta with abundant water and mild climate. The minimums considered for decent production require about 2,800 hours of annual sunshine and at least 1,000 millimeters of rainfall distributed as evenly as possible. In Spain, this excludes a large part of the map: south of Madrid, much land is arid.

You can compensate with irrigation, but water is scarce and rights are not given away for free. In areas of the Guadalquivir valley there are very fertile lands and in the Grazalema mountains rainfall is plentiful, but globally the southern peninsula is dry. And lands with water — borehole, well, or position within an irrigators' community — do not sell cheaply.

How many animals are needed for meat, milk, and eggs?

If you want about 300 grams of meat per person per day, five people need 550 kilos of meat a year. That is three or four calves and therefore about four cows: at a rate of one hectare per head, four hectares just for livestock. The sheep alternative requires 50 lambs of 10-11 kilos, which implies about 50 ewes and between five and ten hectares; dropping to 25 lambs of 20 kilos leaves the range at 3-5 hectares. And there is a third way: five pigs of 110 kilos a year, with a sow and her piglets, plus five hectares of pasture and oak woodland.

Be careful with the diet resulting from these numbers. In a self-sufficiency economy, daily meat is a recent fantasy: until recently, meat was eaten three times a week if things went well.

The garden that feeds seven (less in winter)

There is a case that dismantles catastrophism. A garden of around 500 square meters with lettuce, onions, eggplants, zucchini, peppers, melons, cucumbers, pumpkin, celery, peas, radishes, beetroot, and parsley provides food for seven people and even surpluses. The fine print: only during the production months. From November to March, that garden yields nothing.

Anyone who has seen their grandparents make preserves knows this: winter was eaten from jars. Hence the obsession with drying, pickling, bottling, and syruping. Canned tomatoes, dried peppers, dried figs, peaches in syrup. The pantry, not the garden, decides whether you make it to spring. And fruit trees play to another rhythm: a walnut tree can take nine years to produce its first nuts, while figs, almonds, and olives, being hardier, enter production sooner.

The unsettling fact

With these numbers, total self-sufficiency for five people requires between 5 and 10 hectares, guaranteed water — and owned, because irrigation rights are not given away for free — and full-time dedication. The unsettling fact is not the area. It is that in the best-case scenario, with a garden that feeds seven, production ends exactly when it begins to be needed.