Raised Garden Bed Adjustable with Plant Box and Trellis with Lockable WheelsThe planter box and garden trellis can be used separately or together With its interconnected supporting columns easy to connect more sets Includes a self watering reservoir utilizing a siphon design effortless irrigation Equipped with drainage holes reduce over watering risk promote healthy roots The PE coated metal tubes withstand high temperatures and resist weather damage The metal tubes are textured designed to assist plants in climbing