The discipline we know as hydroponics entails growing plants using mineral nutrient solutions in lieu of soil. This technique has its origins in research conducted in the 19th Century, which led to the discovery that soil is not really essential to plant growth - what really matters is the nutrients that the soil contains. Hydroponics is a method whereby the nutrients are dissolved in water for the plant roots to absorb them. Almost all known plants can be grown using this technique, although it must be pointed out that hydroponics suits some plants better than others. The Hydroponics website sheds light on these issues and many others by means of a thorough collection of articles that have been penned by experts in the field, yet are comprehensible to the average gardener, as they do not contain technical jargon. The materials that can be perused online include tutorials that cover agriculture, horticulture and aquaculture. Links to online shops are provided as well.