The stackable planter is great for growing strawberries, herbs, succulents, flowers, and more in a small amount of space! The planter design has water reservoirs on each layer. Once the reservoirs are filled, the water spills over to the next layer eventually making it to the bottom tray. With this planter you will not need to worry about over-watering your plants. Truly Gardening Made Easy! Can also be used for hydorponics, just ask us how 🙂 The contents include 5 stackers, 20 planting locations, & 1 bottom drip tray.