We your anything about hydroponic organic gardening, you’re probably thinking about... well, a certain plant that may or may not being grown for medicinal purposes. Think again. Hydroponic is an ancient organic gardening technique that’s been around for hundreds of years. In fact, the first known use of hydroponic was by the Aztecs, who used it to create a floating crop system. Only recently has it been so closely associated with a certain herbal medication.