N-P-K

N-P-K stands for nitrogen, phosphorus, and potassium, which are the three primary nutrients that plants need to grow. The numbers on a fertilizer label indicate the percentage of each nutrient in the product by weight. For example, a fertilizer with an N-P-K ratio of 10-10-10 contains 10% nitrogen, 10% phosphorus, and 10% potassium. Nitrogen promotes leaf growth and green color, phosphorus supports root development and flowering, and potassium enhances plant health and disease resistance.