Keep Off the Grass Day is celebrated annually on April 21, having been created by Jace Shoemaker-Galloway. The holiday aims to draw attention to the importance of maintaining lawns and preventing them from being trampled. It has been observed since 2013 and reflects a long-standing tradition of using "Keep off the grass" signs to protect grassy areas. Lawns have historical significance, having been maintained since the Middle Ages, particularly around castles and wealthy homes in Europe. In contemporary America, many households take pride in their lush lawns for decorative purposes. The holiday encourages people to appreciate and care for their grassy spaces, highlighting their aesthetic and protective roles.