What is thatch?
Thatch is the layer of living and dead stems, roots, and other organic material between green grass and the soil surface. A modest layer can be normal. A heavy layer can interfere with water movement and create a poor growing environment.
Grass clippings alone are not usually the whole issue because properly sized clippings break down. Turf type, growth, management, and decomposition all influence accumulation.
What dethatching does
Dethatching uses specialized equipment to pull excessive material from the surface layer. It can be disruptive and should be timed for a turf type that can actively recover. It is not a routine add-on for every lawn.
Nash Aeration Co. does not currently offer standalone dethatching. If thatch appears to be the primary problem, we will not present core aeration as an identical substitute.
What core aeration does
Core aeration removes plugs of soil to create openings and address compaction and soil access. The soil brought to the surface can also support natural breakdown processes, but the primary purpose is not to mechanically remove a heavy thatch layer.
The right recommendation starts with identifying the actual condition: compaction, thatch, thin turf, shade, drainage, or a combination of issues.
Choose the service that matches the problem
If the lawn is compacted and difficult for water to enter, core aeration may be useful. If there is a genuinely excessive thatch layer, a dethatching provider or broader turf assessment may be more appropriate. If the lawn is thin, optional overseeding may be considered after timing and site conditions are reviewed.