The Growing Edge - A bimonthly magazine dedicated to hydroponics, aquaponics, and greenhouse growing. Provides a wealth of free information for soilless growers.
Growing Hydroponic Tomatoes - Interactive web site from the University of Arizona provides practical, accurate information on growing hydroponic tomatoes for students, hobbyists, and beginning growers.
History of Hydroponics - Gary V. Deutschmann covers the history and future of hydroponic gardening.
Home Hydroponics - An excellent introduction to the hydroponic methodology from the Virginia Cooperative Extension.
Hydroponic Lettuce Production - Details of setting up and running a lettuce production facility using Controlled Environment Agriculture techniques. Illustrated with descriptive photos. Cornell University.
Hydroponics for India - Optimus Interweave Australia offers hydroponics consultancy services to Indian horticulture, providing technology which will enable entrepreneurs to cultivate fresh produce in hydroponic tunnels.
Hydroponics Project - Photographic presentation of hydroponics project at Colorado State University.
Hydroponics Resource for Inexpensive Startups - Secrets for starting hydroponic businesses. Includes information about hydroponic nutrients, maintenance, production, greenhouses, and marketing.
Institute for Simplified Hydroponics - Dedicated to supporting efforts to use simplified hydroponics to reduce global hunger and poverty. Offers classes and activities to support the education of simplified hydroponics, especially in developing nations.
Production of CEA-grown Hydroponic Spinach - Publication by the Controlled Environment Agricultural (CEA) Program of the College of Agriculture and Life Sciences at Cornell University. An electronic handbook for the production of CEA hydroponic spinach.
Role of Perlite in Hydroponic Culture - A research report issued by the Perlite Institute, Inc. by Dr. David A. Hall, Principal of the Pershore College of Horiculture in the United Kingdom
SoCal Aquaponics - Aquaponics is a system that integrates aquaculture with hydroponics, the soil-free cultivation of plants. SoCal provides information on hydroponics, aquaponics, aquaculture and the solar greenhouse.
Vitaran HC - Software for calculating nutrition formulations in hydroponic applications. Both site and software in Spanish and English.