Soil is an incredibly complex mixture of organic matter, heavily influenced by its region, what was grown there previously, and the wildlife in the area. More often than not, ones soil is not perfectly suited for growing their plant of choice. This is where our synthetic fertilizer comes into play. Every fertilizer has a three number NPK distinction (Nitrogen, Phosphorus, & Potassium) ie. 14-14-14. These numbers vary from product to product and each of them has a specific application that will make your soil nutrients fit your plants needs much better!