The scent of freshly mowed lawn is a characteristic and pleasant smell that reminds many people of warm summer days and well-kept gardens. It is a beautiful experience that invigorates the senses and creates an atmosphere of freshness and nature. But actually, it is an alarm signal of nature!

The scent of freshly cut grass has a calming effect on many people. It can relieve stress and create a relaxing atmosphere. Often the smell is also associated with memories of happy moments from childhood or shared outdoor activities. For garden lovers, the scent of grass is a sign that it is well cared for. It can also be a small reward after the work of mowing the lawn.

Where does the smell of lawn come from?

When lawns are mowed, the blades release a fragrance called cis-3-hexenol, also known as “leaf fragrance.” Along with other substances such as aldehydes and alcohols, these compounds help the lawn heal wounds, boost metabolism and protect cut grass blades from infection.

Smelling lawn means stress

However, the scent of freshly mowed lawn has an important function in nature: it is supposed to keep predators away and serve as a warning signal. Hungry insects are deterred by the scent cis-3-hexenol, which can even be toxic to some pests. In gardens with large lawns, the scent is released more frequently because the grass in most gardens is cut every two weeks. Due to the constant mowing and regrowth, the lawn is thus exposed to permanent stress and therefore produces more cis-3-hexenol than usual.

A robotic mower is a good alternative

When using robotic mowers, the grass blades are only minimally shortened. As a result, only small amounts of the fragrance are released. The advantage of this method (also known as “mulch mowing”) is that the grass clippings can simply be left lying around and act as a natural fertilizer. But be careful: robotic mowers should also only be used under supervision so as not to endanger animals.