Butcher block cedar sides and lifetime aluminum corners make our Elevated Rolling U-Garden handsome and durable; 16" semi-pneumatic wheels make it mobile on your deck or patio. Roll it into the sun, or out of the way to make room for guests. The planter box is 14" deep — plenty deep for your largest vegetable or flower plants. It accommodates three of our Tomato Cages with room to spare! The U-Garden Watering System helps provide plants with a steady supply of moisture, and means you'll need to water your plants less often. In our test gardens we watered 60% less often, compared to a U-Garden without the watering system. The 5-gallon reservoir helps plants get a steady supply of water through contact with the soil, as well as through evaporation. When it’s time to fill the reservoir, attach your garden hose and in just a few minutes the soaker hose fills the reservoir. The reservoir also captures and stores rainwater, while allowing excess water to drain. Install the watering system prior to planting your U-Garden. Includes a liner to keep soil contained while letting excess water drain.