Abstract: A plant support device, for supporting and watering and fertilizing a plurality of plants, has an octagonal frame. The octagonal frame has eight hollow tubular segments. The eight hollow tubular segments are sequentially disposed end to end to form an octagonal conduit that has eight legs. Each one of the eight legs connect to, extend downward at a diagonal angle and extend away from one of the eight hollow tubular segments. Each of the eight legs include a hollow tubular leg member enclosing a leg channel communicating with the octagonal conduit. Each of the eight legs have at least one aperture disposed on a downward distal end communicating with the leg channel. There is a feeder conduit that communicates with the octagonal conduit. The feeder conduit has a feeder tube, a pressurized fluid fitting for connecting the feeder tube to a pressurized fluid source and a fertilizer introduction mechanism for introducing a fertilizer into the feeder tube.