Vertical Edge Gardens have been designing simple, light-and-space-maximizing hydroponic gardens since 2009. These gardens can be placed just about anywhere, and the self supporting piping framework customized to fit your exact location. Instead of soil, a pump continuously circulates water, nutrients and oxygen through the pipes. According to the company, it saves over 80% of the water from a conventional garden because the system is relatively closed. Maintenance is preformed approximately every 10 days, and includes trimming, planting, reservoir changes, pH balancing and cleaning. For reference, $500 buys you a 28 plant garden, custom designed and fit to your area. Vertical Earth Gardens will also maintain your garden for $30 per visit (required every 10 days). Related Posts: • Window Farms: Hydroponic Edible Gardens for Urban Spaces • Hydroponic vs. Aeroponic Indoor Gardening? • A Living Hydroponic Home in Paris • Aquaponics: The Future of Home Gardening?