A woman quizzes a man on what mulch is and how it helps the the grass. John Deer lawn mower is shown and includes how mulching is controlled by a click of a button on the John Deer lawn mower. You can simply control when and where you want the mulch. The man includes why mulch is important, it is because mulch contains nutrients that make any lawn healthier. Mulch also acts as a natural fertilizer for your lawn.