Complications of Too Many Fertilizers

Fertilizer Burn

• Fertilizer burn occurs when the chemicals in fertilizer become too concentrated in the soil and roots, making it impossible for grass roots to get enough water. Using quick-release fertilizers and not watering lawns after applying fertilizer increases the chances of fertilizer burn.

Weakened Grass

• Applying too much fertilizer sometimes leads to weakened grass, poor root growth and too much shoot growth, which requires more mowing and is more susceptible to pests and diseases.

Pollution

• Using too much fertilizer also increases the risk of pollution, especially if you apply fertilizer improperly or carelessly. For example, if you don't sweep up fertilizer spilled on your driveway, it will dissolve in the rain and contribute to runoff pollution in the water supply.

Avoiding Too Much Fertilizing

• Performing a soil test before fertilizing helps you determine how much fertilizer to apply. In addition, choose slow-release fertilizer over quick-release fertilizer and fertilize less on shady lawns or during a drought. Never apply more than 1 lb. of nitrogen per 1,000 square feet on any single application. Follow label instructions carefully.