Garden art, if compared to other kinds of art, can be extremely ambiguous: it is built with nature although it should get away from it through a gesture which makes it a garden and that isolates it from the surrounding extension. The garden is a fragile reality since it deals with the transitory and ephemeral world of the plants, with a life cycle, with mutability, with well established temporality, different from static art. Under this perspective, many authors are incisive to point Roberto Burle Marx as a definer of landscape modern aesthetics, joining the spirit of plastic research to garden solutions. They state his productions as discoveries of a new form of intellectual art, a modern language, harmonizing geometric and order values with unstable values from the nature. This work process presupposes an articulated point of view, which considers the role played by the constant and variables: the formal definition of space (which seeks for an extremely visual focus in the composition, just as on a canvas where the elements have an intrinsic logic), the knowledge of species as the understanding of the movement, and the time dimension in the garden. These landscape compositions start to constitute a unit, an autonomous and own experience having internal logic, despite being connected to an extension and to an infinitely wider movement of the nature as a whole. There is a strand exchange related to landscape knowledge: the planning built through art, in a coexistence with the eternal principal of nature. By introducing aestheticized nature into architecture, a way of carrying out the reconcilement between architecture and nature was established, sometimes enabling a compositional unit, and sometimes enhancing the distance between the two elements instituted in its reciprocal externality.