The container (2) has front and rear walls (3, 4) integrated to a bottom wall (7) in a detachable manner for defining a space between the walls, where the space receives a cultivating substrate. The front wall includes openings (31) permitting passage of sprouts of plants. The front and rear walls respectively include fragility lines along which the front and the rear walls are tired out. The fragility lines of the front wall are arranged at level of the fragility line of the rear wall, where the walls are made of synthetic materials.
