Does mulching grass clippings into the lawn increase the build-up of thatch?
Most homeowners bag lawn clippings because they think that the clippings add to the buildup of thatch. This is not true. Clippings that remain on the lawn quickly decompose and release valuable nutrients and beneficial bacteria that actually feed on the thatch layer. Fertilizer needs can be reduced by 20 to 30 percent if the clippings are left on the lawn. The shorter the clippings, the deeper they fall into the turf. The use of a mulching mower and/or frequent mowing will produce the smallest clippings. If you don’t have a mulching mower, consider mowing your lawn twice at one time. This will further reduce the size of the clippings and distribute them deeper into the lawn. Mowing when the grass is dry and fertilizing properly will also help to prevent an excess buildup of thatch.
