Thatch material is high in lignin and is slow to break down, just like a woody branch or wood chips. Clipping debris, the material left on the lawn after you mow, is very low in lignin and does not ...

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Thatch can be a boon or problem for lawns. On one hand, thatch supplies necessary food sources for microbes and organic matter. But excessive thatch can harbor diseases and insects. Thatch that is ...

Thatch is a normal part of a healthy lawn, but, if the thatch layer is an inch or more deep it is considered excessive and may contribute to lawn problems. (NOLA.com | The Times-Picayune archive) ...