A number of planter base attachments are disclosed which can be fitted to an open-ended product, such as a plastic drainage pipe, to create a planter. The planter base attachment incorporates a base with raised sidewalls which fit into an open end of an open-ended product. The raised sidewalls engage the interior sidewalls of the open-ended product to create a tight fitting. Despite this tight fit, the planter base attachment allows excess moisture to drain through drainage routes disposed in the raised sidewalls. These drainage routes direct moisture to a catchment lip or tray connected to the base. A shelf sits transverse to the raise sidewalls and serves as the bottom side of the planter, which holds in growth media and adds rigidity to the attachments overall structure.