Features: The Root Control Planter Base features innovative ribbed sidewall design that enhances root branching by 20-30x, significantly improving plant survival rates and enabling year round transplanting of mature saplings for diverse gardening projects. Constructed with thickened PVC build for superior durability and antiaging performances, this planter base incorporates easy detach structure to prevent root damage during transplantation while maintaining structural integrity over time. Ideal for professional gardeners, nursery operators, and large scale cultivators seeking efficient seedling management solution for commercial horticulture or city landscaping initiatives. Perfectly adapts to challenging environments including roadside tree transplantation, hedge maintenance in public spaces, and controlled root development in greenhouse cultivation systems. Its optimized drainage systems combines wide cup openings with elevated drainage holes to prevent waterlogging, while integrated rainwater outlets in the reservoir tray ensures healthy root aeration and thermal insulation in various weather conditions. Specifications: Component:PVC Process: Fine molding Optional size:Approx.20x20x3cm/7.87x7.87x1.18inch, 30x30x3cm/11.81x11.81x1.18inch, 40x40x3cm/15.75x15.74x1.18inch Use scenario: transplanting of big trees, roadside hedges,tuber planting; Package Includes: 1pc Planter Tray note: Please allow 1-3cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.