Grow! - Europan Würzburg
The project „Grow!“ for the competition „Europan 2011“ tries to connect the development of baubotanical and urban planning structures. The basic idea for this concept is the need of urbanity for space for the unknown: In the initial stage of development, a city or a city quarter should not be finished and spatially fixed. In this way, it can adjust to changing cultural, demographical and economical conditions as well as satisfy user demands.
At "Grow!", baubotanical structures are an integral part of the building structure. With the help of the plant addition, baubotanical structures can be realized directly in the dimension of the surrounding buildings, stabilized by a lightweight bamboo framework. In the beginning, they are not accessible, but after a period of 10 - 15 years, the structure will become self-supporting by their growth in thickness. Now you can start to install modules for usage which offers the opportunity to add space additionally to the living rooms in the buildings.
Grow! is based on a living plant construction concept and is characterized aesthetically and spatially by the qualities of the chosen species of trees in the passing of the seasons. For the different spatial situations and types of uses three different species were chosen: cherry (Prunus Avium), birch (Betula Pendula) and plane (Platanus Acerifola). Whereas all three species are very suitable for living plant construction because of their anatomic structure and growth patterns, they vary markedly in shape and effect: the cherry provides a range of romantic atmospheres from spring to autumn - a display of white blossom rings in spring, dense green foliage and lovely fruit in summer are followed by a vibrant red colouring in autumn. The birch has an impact all year round with its black-and-white bark structure and creates airy and mainly transparent spaces. Pruning will strongly shape the growth of the plane trees. This way a knotty stem structure is achieved with a late but very dense and vibrantly green leaf flush.
The care of the different types of trees should be differentiated: the initially quite dense diamond pattern of the birch trees changes through growth processes and competition into a heterogeneous fragmented pattern. This form of partial proliferation is counteracted in case of the less densely planted planes by rigorous pruning which allows a constant structure to be maintained.