Inspired by the African keyhole gardening technique, the Urbana 6x6 Keyhole Composting Garden lets you compost household waste and grow vegetables in the same garden. A central compost basket is used in the Keyhole Garden to conveniently place your daily kitchen scraps. This household waste is then organically transformed into nutrient rich soil that nourishes your vegetables. Compost fed soil better holds moisture and nutrients, while using up to 70% less water. The Urbana collection is crafted from an embossed PVC material that offers the natural look of wood, but with the lightweight durability of vinyl. Dual aesthetic boards can be reversed to allow for either a natural wood grain look or brushed finish and are BPA/phthalate-free ensuring healthy, safe food production and a long product lifespan. Boards slide into posts easily and conveniently, with no need for tools or screws. Our innovative posts make for perfectly modular garden beds, allowing you to design and configure your own unique layout and size. It's smart, sustainable and beautifully designed.10-year limited warranty against manufacturing defects