Every plant needs its own fertilizer in order to grow in a healthy way. In a huge market of fertilizers, one does not know which one to use. There are a lot of fertilizers and each one has its own benefits to the soil and the plants in this soil. For example, some plants need fertilizers that contain nitrogen as this is the naturally-occurring element that makes up a large part of the air we breathe. But the nitrogen in the air isn’t enough to feed our plants, so we rely on organic matter and garden products to provide enough of this nutrient from the roots up. Nitrogen is responsible for the growth of leaves on a plant. In fact, you may be able to diagnose a nitrogen deficiency with yellowing leaves and skinny stalks. Nitrogen also helps plants create chlorophyll, a green pigment in plants that allows for the absorption of sunlight into photosynthesis. Green plants and vegetables typically have higher nitrogen requirements.