Layers of coarse materials are used in composting, including damp grass clippings, leaves, straw, coffee grounds and vegetable scraps until it reaches a depth of four feet.
(Layers of coarse materials; are used; in composting, including damp grass clippings, leaves, straw, coffee grounds and vegetable scraps; T:until it reaches a depth of four feet) (it; reaches; a depth of four feet)
Layers of coarse materials it
are used reaches
in composting, including damp grass clippings, leaves, straw, coffee grounds and vegetable scraps T:until it reaches a depth of four feet
a depth of four feet