Abstract: A new and improved raised garden bed apparatus which is raised above ground level includes a wall assembly that is supported by the ground for defining a raised garden bed. The wall assembly includes at least one plastic wall member. The wall assembly may include a plurality of straight, interconnected plastic wall members that define a rectangular raised garden bed. The plastic wall members are connected together with fasteners which may be screws or complementary hooks and slots. A first trestle member may be supported by the plastic wall members above ground level. A quantity of plant sustaining material may be placed over the first trestle member and be supported thereby. A second trestle member may be placed over the quantity of plant sustaining material, such that the quantity of plant sustaining material is sandwiched between the first trestle member and the second trestle member. The second trestle member is supported by the first trestle member and the plastic wall members above ground level.