#MIST Model #5905 designer planter Fill Port Plug Double Wall Design Planting Basie Water Troughs resinous Planter WV Protected Shack Res All Weather Mated at Overflow Drainage Water Reservoir e Built-in water reservoir and overflow drainage hole. ยป Avoid using garden soil or top soil for container planting, it's often too dense and restricts air circulation. A potting mix is strongly recommended and will ensure better plant growth.