Fertilizer Information

The goal of any fertility program should be to produce good top growth while not at the expense of root growth.

Nutrition (N, P, K)

Nitrogen (N), Phosphorus (P), and Potassium (K) are typically your three main nutrients in lawn fertilizers. The three numbers on a fertilizer bag will represent the percentages of N, P, and K. Sometimes other nutrients will be add in small quantities.

Nitrogen will give your lawn a nice dark green color. It will also promote leaf growth at the expense of root growth. Therefore nitrogen needs to be balanced with Phosphorus and Potassium. When buying fertilizer look for one that has a slow release form of Nitrogen. Slow release Nitrogen will produce a lawn with good color without excessive leaf growth. It will release nitrogen over a longer period of time resulting in less applications.

Phosphorus is needed for energy transfer in the plant. Generally it is needed in smaller amounts then Nitrogen or Potassium. Newly sodded lawns will need more Phosphorus then established lawns due to the amount of energy the plant will need to establish it's root system.

Potassium is needed so that the plant can withstand disease and insect damage. It promotes good cell wall development in the grass plant.