The best fertilizer for Bermuda grass will be high in Nitrogen, slow-release, and granular. The best time to fertilize is mid-spring, mid-summer, and early fall. NPK Ratios. Notice that the majority of granular fertilizers that are best for Bermuda grass will have an NPK ratio of about 3-1-2 (or high-low-medium).
The N-P-K Ratio. Together, the three nutrients are the basis of the N-P-K ratio number listed on a fertilizer bag. The N-P-K set of numbers refers to the exact ratio or weight of Nitrogen (N), Phosphorous (P) and Potassium (K) that is present in a specific bag or container of fertilizer. As an example, a 5-5-5 set of numbers on a fertilizer bag
NPK fertilizers are formulated to provide a balanced supply of these three primary nutrients. The three numbers on the fertilizer label, such as 10-10-10 or 20-10-10, represent the percentage of each nutrient in the fertilizer by weight. For example, a 10-10-10 fertilizer contains 10% nitrogen, 10% phosphorus, and 10% potassium. yfO4Nr.