Patent ID: 8209905
Filing Date: 2012-07-03
Classification: A01G

Abstract:
1. A greening system, with a soil layer formed for a plant to grow in, the greening system having a container with an open top, comprising: a watertight water storage space in the container, the water storage space having an upper end; water permeable and substantially non load-deformable spacers positioned in the water storage space and stacked at least up to a level higher than the upper end of the water storage space, a topmost one of the water permeable spacers having an upper face; a breathable sheet on the upper face of the topmost water permeable spacer, on which the soil layer is placed; drain holes at a bottom of the container to drain out water overflowing from the water storage space and maintain a water level in the water storage space below the upper end of the water storage space; a layer of porous materials between the water storage space and the soil layer, so that the water storage space is separated from the soil layer; and with the watertight water storage space formed of a watertight sheet extended all over the lower half of the container, and the spacers stacked at least up to a level higher than the upper end of the watertight sheet.