Choose removable self-watering liners (SWL) to facilitate smaller plant management throughout the seasons. With built-in, rot-resistant wicks and water reservoirs, capillary action draws water from the reservoir up and into the soil mix. Excess water drains through holes in the bottom of the container, which may be plugged for indoor use. The inside planting dimensions of each self-watering liner are 14-3/4 in. sq. x 9-1/2 in. deep, overall dimensions below.