Hydroponics Course Hydroponics is the cultivation of plants by placing the roots in a liquid nutrient solution rather than in soil. Many of us, have placed a plant cutting in water & noticed that it sprouts roots & begins to grow. This is a simple form of hydroponics. Unfortunately, most plants will not sprout roots & all you get is dead stems & smelly water. This course will teach you the fundamentals of what to feed your plants & how best to do it, hydroponically. Soon you will understand this scientific art & the course will break down the technical terminology & guide you through the process of successfully operating your own hydroponics set-up.