A raised garden box assembly. The raised garden box assembly may include a plurality of hollow sidewalls, each hollow sidewall may have a top rail, a bottom rail, an inner side member and an outer side member, where the top rail is connected to an outer side member and an inner side member and the bottom rail is also connected to the inner side member and the outer side member. The outer side member and the inner side member may form a hollow interior space and each of the plurality of hollow sidewalls may include a plurality of support ribs, each of the plurality of support ribs may directly contact the outer side member and the inner side member. The top rail, bottom rail, outer side member, inner side member and plurality of support ribs of each hollow sidewall may be integrally formed as a single unitary piece via an extrusion process. The raised garden box assembly may also include a plurality of hollow corner posts, each corner post having a first and second opening, where each of the first and second openings may receive a terminating end of one of the plurality of hollow sidewalls, the plurality of hollow sidewalls and corner posts forming an enclosure.
