Plants are like kids… They need to be fed! Fertilizers contain the essential chemical elements a plant needs to thrive and survive. In order for plants to have a successful growing process, they require the absorption of 6 different chemical elements: Oxygen, Hydrogen, Carbon, Potassium, Phosphorous, and Nitrogen. The first three (Oxygen, Hydrogen, and Carbon) come from air and water, making the supply abundant and cost free. However, the second three (Potassium, Phosphorous, and Nitrogen) can only be found in fertilizers.