What is Thatch?

Thatch accumulates on the surface of your soil just below the grass line and usually out of sight. Thatch is a layer of grass stems, roots, clippings, and debris that settle on the ground and either slowly decompose and/or accumulate over time. Thatch buildup is commonly found in lawns where grass has grown tall, mulch is frequently left, and lawns that have never been aerated. Thatch is most common in warm-weather and with creeping grasses such as Bermuda and Zoysia. If you have these grasses, you will usually have to de-thatch more often than with other grasses. De-thatching is the process of removing thatch from your lawn.