Yes, high NPK fertilizers give your plants an instant boost, but at the expense of your long-term soil strength. Did you know that most fertilizers turn into salt after the plant uses the nutrients? They also put large quantities of poisons into our water table.
In fact, only 20% of the nitrogen you put in your soil from a chemical fertilizer is absorbed by your plants. The rest ends up in our water table flowing into streams, rivers, lakes, and the ocean creating huge algae plumes that choke out aquatic life. Another interesting fact about chemical fertilizers is that they can be absorbed through the foot of a human and travel throughout an entire adult body in 20 minutes!! If your child plays barefoot in your yard, it takes only a few minutes.
Worm castings bring your soil back to life and an organic living acre of land will produce 400 pounds of its own nitrogen every year! Castings bring long-lasting value to your soil!