Rosa dos ventos sagres

Horta 42

A global field for Sagres

Figura 1: A rosa dos ventos está pendente quando navegamos para o norte de acordo com os segmentos do círculo.

The cover picture shows the Rosa dos Ventos in the Fortaleza de Sagres. This compass rose has 42 lines that point evenly in 42 directions. Ironically, the magic number 42! The ‚answer to all questions‘ if it were up to the supercomputer in the novel ‚The Hitchhiker’s Guide to the Galaxy‘ by Douglas Adams.

There are all sorts of legends about Fortaleza. Did Heinrich the Navigator train his navigators there? That is now considered refuted. But what was the compass rose for? The navigation? Or is it a sundial? No matter! We let ourselves be seduced by Douglas Adams.

Let’s look at the directions in which the sun rises and sets at the time of the solstice. Let’s start in the north. Then the positions of the sun at the solstice mark almost exactly the seventh of the 42 circle segments. Between the north marked in gray and the yellow summer solstice (June 20), between the summer and winter solstice marked in blue, and between the winter solstice and the south, there are six pieces of cake. On both semicircles, in the east and in the west, things are equally happening.


Figura 2: Posição do sol e os 42 segmentos

Let’s start in the north. Then the positions of the sun at the solstice mark almost exactly the seventh of the 42 circle segments. Between the north marked in gray and the yellow summer solstice (June 20), between the summer and winter solstice marked in blue, and between the winter solstice and the south, there are six pieces of cake. On both semicircles, in the east and in the west, things are equally happening.

Figura 3: a rede de caminhos destaca os significados

We replace the marked parcels with paths. Each path now highlights north, south or one of the stated positions of the sun. There are six circular segments between each of the paths. A total of 36 segments. We have six path segments and 36 bed segments, total: 42. This is how we want to lay out our garden.

Every person in the world has 2000 square meters of arable land available. From a purely statistical point of view. All arable land is distributed equally to all people.




Figura 4: Divisão em caminhos e leitos

We want to show that the two of us can grow all of our own needs on 2,000 square meters. Without high-tech, without genetic engineering, without chemicals. We leave the remaining 2,000 square meters to which we are entitled to donkeys, a few chickens and our guests.

Each segment of a circle as a bed must have 55.56 square meters, of which we give about 0.4 to a circular path that describes the size of the Rosa dos Ventos from Sagres.

And here is the planning for our garden:

For long-term planning, it is important to distribute the perennial plants. Fruit should not ripen as a trellis, but on a half-trunk. Trees and tall bushes and shrubs should shade sensitive plants. At the same time, they help to keep the moisture in the soil for as long as possible. The rooting of the soil by trees and bushes counteracts soil erosion. We put plants in need of shade under trees. Vines and berry bushes mark the ray-shaped beds. Annual sowing must alternate between the outer circle and the inner wind rose for good crop rotation.

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