A healthy lawn prevents soil erosion and stabilizes dust.
Grass protects the soil from wind and water erosion. A good stand of grass stabilizes the soil with its roots. The roots knit the soil together preventing the soil from moving.
A dense cover of grass also reduces dust because the soil particles are not able to move with the wind. This ground cover provides a place for airborne dust to settle.
Healthy lawns clean the air
Grasses take in carbon dioxide and break it down into oxygen and carbon. The lawn outside of your home can provide most of oxygen you breathe. In fact, a 50' x 50' grass area will provide enough oxygen for a family of four.
Grasses also take in other gases. An acre of grass will absorb hundreds of pounds of sulfur dioxide per year. The haze created by these pollutants can reduce the sunlight by as much as 15%.
A healthy lawn absorbs rainwater
Grass helps reduce runoff and prevents soil erosion, capturing and filtering rainwater to recharge our groundwater supplies. Grass covers the soil and intercepts raindrops as they fall. Grass interferes with runoff flow, slowing it to the point where soil particles have a chance to soak it in.
In fact, water runoff from lawns is somewhat rare because the average 10,000 square-foot residential lawn in the U.S. can absorb more than 6,000 gallons of water from a rainfall event.
A healthy lawn is like a natural air conditioner
On a hot summer day (roughly 85º F), natural grass lawns will be 30º cooler than asphalt, 40º+ cooler than artificial sports turf, and 14º cooler than bare soil. The front lawn of a home has the cooling effect of about 9 tons of air conditioning. The cooling effect of irrigated turf reduces the amount of fuel that must be burned to provide the electricity which powers the air conditioners.
A healthy lawn is pleasing to the eye.
There can be no argument that a beautiful lawn is immediately pleasing to the eye and relaxing in its appearance. Appraisers estimate that a well-landscaped and maintained lawn adds 7% to the value of residential property. A recent Gallup survey concluded that a 15% increase in selling price can be realized when the home is nicely landscaped.
A lush lawn is safer for play
Homes, sports fields, and parks with healthy grass provide a natural cushion to reduce shock and potential injury.