GreenStalk was designed with water and plant health in mind. The shape of the planter minimizes the soil’s exposure to sun, decreasing evaporation and time spent watering. Just fill the top reservoir and the slow drip watering system will deliver water directly to the roots of your plants. Planter stacks together for quick assembly or down for convenient storage. GreenStalk uses 2 square feet of space, making it possible to grow in a limited space. Made in the USA and from BPA-free plastic. Includes manufacturer 5-year warranty against fading and cracking.