A simple self-waterer consisting of only one part, Molded of durable plastic this receptacle is designed so that an inverted plastic soda or mineral water bottle (serving as a water reservoir) is mounted on the back of the base to feed water to the plant by capillary action, The system fills the receptacle only to a depth that touches 1/8"" to 1/4"" of the soil in the bottom of the pot penetrating through the drain holes (normally found in the bottom of all pots), This allows the soil to absorb the water and keeps the soil finely and uniformly moist at all times, USE ANY 16 OZ 1 OR 2-LITER PLASTIC SODA BOTTLE EACH FILL LASTS 2 TO 6 WEEKS IDEAL FOR POINSETTIAS AND ALL OTHER POTTED FLOWERING PLANTS THE UNIT WILL ACCOMMODATE UP TO 8-1/2"" DIAMETER POTS, COLORS: GREEN AND CLAY SKU: MLR029