To keep the grass from dying. Many trees (nothing like that in these pictures) can drop a huge quantity of leaves that are quite effective—both physically and chemically—at killing off surrounding grass, even out from under the shade of the canopy. Leaves can make great vegetable garden compost. But in huge quantities they are not kind to grass.
Do not understand people who rake. Do the trees in the forest need their leaves raked? Then why do it?
To keep the grass from dying. Many trees (nothing like that in these pictures) can drop a huge quantity of leaves that are quite effective—both physically and chemically—at killing off surrounding grass, even out from under the shade of the canopy. Leaves can make great vegetable garden compost. But in huge quantities they are not kind to grass.