BACSAC® was born with the encounter between designer Godefroy de Virieu and landscapers Virgile Desurmont and Louis de Fleurieu. Together, they looked for an alternative solution to get round the constraints of the creation of a roof garden in town: difficulties of transportation, excessive weight, but also lack of choice of containers, most of which are often very expensive. How can we reverse the tendency to pay more for the container than the contents? How can we make mobile an instalation which is often fixed because of its weight and its rigidity? How can we create a planted area at the lowest cost? The idea of planting in bags comes from this desire to change habits and valorize what it should be, the plant. They are launching the manufacture of bags in a permeable geotextile to prevent asphyxiation of the soil.