A self-watering planter features wicking devices whose outer tubes feature a skeletal upper structure having a plurality of columns periodically interconnected by rings spanning circumferentially around the wicking material to delimit windows of large area for optimum water seepage to the soil. A flange at the bottom of the tube's skeletal upper portion cooperates with snap features at the top of a lower portion that hangs in the water reservoir to provide snap-fit installation of the wicking devices on a divider wall of a permanently enclosed planter. A soil drainage filtration device features filtration fabric held in a sandwiched state around a drainage opening in the divider wall by one or more mounting plates. In one embodiment, the fabric forms a sack that hangs into the reservoir to suspend a volume of soil therein, whereby the suspended soil serves as wicking agent in the absence of excess rainwater needing drainage.