Instead of buying fertilizer, leave your grass clippings on the lawn. The blades will decompose in a week or two, adding nitrogen-the nutrient that grass needs most to grow-t... read full tip

Instead of buying fertilizer, leave your grass clippings on the lawn. The blades will decompose in a week or two, adding nitrogen-the nutrient that grass needs most to grow-to the soil. By using dry grass clippings to keep your lawn healthy, you also avoid leaching excess nitrogen and phosphorus from store-bought fertilizer into the groundwater supply.

To boot, you'll save precious space in community landfills. Yard clippings alone make up an astounding 13 percent of all waste that we generate in the United States. If every household in America that sent grass out with the garbage instead left those clippings behind after mowing the lawn, we would save landfill space equivalent to the volume of almost 400 professional football stadiums!