With more and more vegetable growers looking into soilless or hydroponic vegetable production, the need for a simple yet productive growing system has gained attention in recent years. Hydroponic growing systems are based on sterile, inert, and uniform growing media that serve as supports for a water-soluble nutrient solution. Commercial growers have traditionally used one of several hydroponic growing systems: the nutrient film technique, of media-based systems using peat mixes, rock wool, and sometimes even sand or gravel. Horticultural perlite has an excellent record as a propagating and growing medium. It has been used successfully in many applications as a supplement to various growing media for a variety of crops. Now, however, perlite is beginning to be used by itself as an ideal hydroponic growing media. Perlite is produced throughout the U.S., making it cost effective for growers. It can be used for two years, and then spread on farmland or sold to gardeners.