This is the percentage a product contains by volume of nitrogen (chemical symbol N), phosphorus (P), and potassium (K). A 5-10-15 fertilizer therefore contains 5% nitrogen, 10% phosphorus, and 15% potassium.
This is the percentage a product contains by volume of nitrogen (chemical symbol N), phosphorus (P), and potassium (K). A 5-10-15 fertilizer therefore contains 5% nitrogen, 10% phosphorus, and 15% potassium.