The 3-Tier Stacking Planter Tower from Nature Spring can make amazing vertical displays of flowers, herbs, vegetables, strawberries, and annuals that are visually pleasing from all angles. The 3 trays stack on top of each other to create a tower of 9 separate pots designed to self-water each other as with a trickle-down process that makes these planters easy to maintain. Constructed of durable plastic, with 3 drainage holes in each tray, these unique plant trays are built to hold plenty of potting soil and withstand the outdoor elements in any climate.