The Good Ideas, Inc. Garden Wizard Cascade adds a new twist to the raised bed garden market. Using the same, self-watering walls as the original Garden Wizard Raised Bed Garden, the Cascade adds a second tier to the mix. Not only does this add a nice visual augmentation, it's useful for keeping plants separated and provides a more convenient place to sit. You also have a deeper root area to work with and plants are closer at hand this way. This raised bed uses four 50" wall sections that interlock to enclose a 48x48x10 inch space. Above that is a 2x4 foot area that balances out the top tier. When the walls are filled, they can provide over 30 gallons over water to your plants. That's right, this patented design makes use of special soaker hoses that connect to each wall. When you fill one wall with water, it transfers to each of the other walls while simultaneously watering the garden. The unique soaker hose uses a slow-drip, wicking action that only delivers water to the soil when needed. So you can be assured that plants will stay watered, but not over-watered. But the wall sections can also work without the soaker hose, providing you with a beautiful, sturdy, and inexpensive rock wall border. Most raised bed gardens require a lot of set up time and effort to complete and use treated wood or other unsafe and easily damaged materials. The Garden Wizard Cascade takes no more than 10 minutes from start to finish. Simply layout your setup location, connect the wall sections with the pins, and attach your included soaker hose (optional). Each kit can be infinitely expanded. Made using FDA approved materials.