How is this different from chemical products?

Mile High Rose Feed uses a unique combination of 6 organic elements – Kelp Meal, Mile-Hi Alfalfa Meal, Meat and Bone Meal, Blood Meal, Fish Meal and Cottonseed Meal. The primary elements used are Nitrogen, Phosphorus, and Potash.  The secondary elements are Calcium, Magnesium and Sulfur. There are a few trace elements of iron, zinc, manganese, copper, boron, and molybdenum.