What is Thatch?
Thatch is a layer of living and dead grass shoots, stems and roots that forms between the grass blades and the soil. Some thatch is beneficial because it provides insulation from temperature extremes and keeps moisture in the soil. However, when that layer of thatch becomes too thick, (more than ½”) it can increase pest and disease problems and prevent oxygen, moisture and other nutrients from reaching the roots.
What are the benefits of Power raking?
Too much thatch will prevent enough water and air getting to the roots. This being the case, lawns typically need to be power raked every 2 - 5 years. Mulching the grass clippings when mowing the lawn will cause thatch to build up quicker which prevents optimum growth for your grass. Your grass needs to be maintained so that it is receiving enough water and air to its roots.