Your yard is part of the natural landscape and can offer food and cover for insects, mammals, and birds. Leaving the leaves where they fall adds nutrients back to the soil and provides great cover for insects seeking shelter from the cold and snow.
The leaf litter also provides an extra layer of insulation and protection for native, ground and cavity nesting bees and wasps. Some native butterflies and moths have even adapted their chrysalis to mimic the look of dead leaves and seeds. They will overwinter in the leaf litter and hatch in early spring, providing pollination services for early blooming flowers. » Continue Reading.