NPK Fertilizer Mixtures: How to Choose, Mix, Calculate & Apply the Right Ratio for Your Garden
Understanding N–P–K (Nitrogen–Phosphorus–Potassium): Every fertilizer is labeled with three numbers (the grade), such as 10-10-10 or 20-10-10. These represent the percentage by weight of nitrogen (N), phosphate (P₂O₅), and potash (K₂O) in the mix. For example, a 10-10-10 fertilizer contains 10% N, 10% P₂O₅, and 10% K₂O by weight. This means 10 pounds of 10-10-10 … Read more


