A retaining wall planter block that is resistant to damage and wear caused by the environment in which it is placed, but also accommodates the growth of desired vegetation. The planter block contains a fill material that is conducive to vegetation growth, and has apertures for the emerging vegetation. The deterioration resistant planter block is generally a hollowed frame or shell of a deterioration resistant material that is light-weight and is configured to accept and retain any type of organic filling material and seeds. The filling material provides weight and stability to the retaining wall planter block and also provides weight, stability and security to a retaining wall constructed of such planter blocks, as well as suitable growth medium for the vegetation.
