Grass clippings, from mowed lawns are sometimes collected and used elsewhere as mulch. Grass clippings are dense and tend to mat down, so are mixed with tree leaves or rough compost to provide aeration and to facilitate their decomposition without smelly putrefaction.

Grass clippings, from mowed lawns are sometimes collected
and used elsewhere as mulch. Grass clippings are dense and
tend to mat down, so are mixed with tree leaves or rough
compost to provide aeration and to facilitate their decomposition
without smelly putrefaction.