
According to Sod Solutions, the best fertilizer to use in the spring is a 15-0-15 and in the fall, a fertilizer with an 8-0-16. What do these numbers mean? The numbers are Nitrogen – Phosphorus – Potassium. These are generic recommendations that are meant to work for a wide area, from California to Florida. Since the health of the grass starts with the soil, we recommend getting your soil tested every couple of years to know if you need any amendments.