Fallen leaves provide crucial winter protection for insects and invertebrates like butterflies, moths, and beetles. For example, wooly bear and great spangled fritillary caterpillars rely on leaves for warmth and food. By participating in the “Leave the Leaves” campaign, schools can support these ecosystems on their own grounds. Imagine designating a section of the schoolyard as a “wild zone” where leaves are left undisturbed, creating a living laboratory for students to observe changes throughout the seasons.