9 Best Lawn Dethatchers of 2023 | Reviews + Guide

Based on our research, dethatching is usually performed during mid-Spring and mid-Fall. The weather in these months is ideal for dethatching as it promotes healthy grass recovery as well as favorable conditions for new grass growth. 

Dethatching is a method of removing the dead layers of grass from the soil surface as it allows room for new grass to grow. On the other hand, aeration is the process of sucking out plugs of compacted soil as it promotes better saturation of light, water, and nutrients to the plant. 

While dethatching the lawn, one should be aware of the weather conditions. If the lawn is wet, we do not recommend dethatching your lawn as it could damage the healthy grass by pulling out its root. This would eventually lead to lawn thinning. 

Under most circumstances, we recommend going with a corded electric lawn dethatcher which is more eco-friendly and beneficial for the environment. But if you are looking for something more durable and heavy-duty, then we recommend trying some of the heavy-industry tow behind lawn dethatchers. They can easily mount on any tractor or vehicle. 

We recommend dethatching your lawn every one or two years, depending on the grass type and weather conditions in your area. Cooler and heavier grass types require dethatching either once in a year or less. At the same time, the heat-loving grass type requires a more frequent dethatching routine. 

When you dethatch your lawn, it removes all the dead grass from the lawn surface. This tends to leave the soil exposed; thus, your lawn appears barer than usual. But fret not because this makes more space for new grass and promotes a healthy lawn. 

According to our research, the grass height should be less than 4 inches before dethatching. If the grass length is greater than that, then we would recommend mowing the lawn before dethatching for better lawn health.