For quality growth and substance, lawns need fertilizer. Goodfertilizer supplies food for the lawn and improves the condition ofthe soil for sustained growth. Fertilizing will improve thestrength and look of any lawn.Fertilizers come in two basic types, chemical and organic.Chemical fertilizers often contain specified amounts of nitrogen,phosphorus, and magnesium. They come in sprays and granules andmust be applied according to the package directions. Too muchchemical fertilizer can damage a lawn, and too little won't producethe desired results.Chemical fertilizers are harmful to aquatic life and should notbe used around ponds, lakes, or any water supply. Doing so killsfish and can damage the ecosystem. Try not to use them immediatelybefore a heavy rain either since infiltration and run-of