A green wall planting support apparatus includes at least one plant support structure and a plurality of baskets. The plant support structure includes a vertical main plate that has a plurality of basket hanging portions. A water supply unit includes at least one main pipe connected to a water source, and a branch unit that is coupled to the main pipe and that has a plurality of watering conduits. Each basket has a basket body with a receiving space. The basket body has a basket hanger portion that is detachably connected to one of the basket hanging portions. The watering conduits convey water into the receiving spaces of the baskets, respectively.
