"Existential Angst" writes:


Depends.

Here in central NJ under Tulip Poplars, the amount of leaves that fall
is sufficient to create a pile 4 inches deep over the entire lawn.

Most of the lawn would be dead in one year if the leaves weren't
removed.

Even small clumps of leaves will make bare spots on a lawn over the
winter here.

Leaves on bare ground don't cause a problem, except that they will
blow off the bare ground onto the lawn over the winter.