Patent ID: 6748698
Filing Date: 2004-06-15
Classification: E01C,E02D,E03F,Y02A

Abstract:
A system for regulating the supply of water to a plant, the system comprising:a permeable surface layer providing an upper surface; at least one supporting substrate layer thereunder which is permeable to liquid; an island in the form of a hole or trench formed in said surface layer for receipt of a plant; a liner in said hole or trench containing a volume of plant growing medium, the liner being impermeable to water; drainage means adapted to drain water from the plant growing medium contained within the liner and convey the drained water to a desired location; wherein the drainage means is a pipe, the section of the pipe located within the liner is surrounded by a particulate material, and the particulate material is surrounded by a dispersing layer; and duct means for allowing the regulated passage of water from said substrate layer to the plant growing medium.