The present invention provides an expandable vertical garden system comprising a frame； drip irrigation pipe(s) (9)； drainage pipe(s) (6)； a drain tray； and optionally pots or plant containers. The frame of the expandable vertical garden comprises: [i] holes (1) for inserting screws which get drilled into the support wall/framework； [ii] cavities (2) wherein pots can be snapped in and snapped out； [iii] support snubs (3) in each cavity for the pots to get good anchorage； [iv] small holes (4) above each cavity, wherein clips to hold a horizontal irrigation pipe can be fixed in； [v] a large hole (5) at the bottom of the frame for inserting the drain tray (7)； [vi] a cavity on a rear side of each frame wherein the drainage pipe (6) can be fixed.
