Is a Seed Slicer or Core Aerator Better?

A manicured lawn requires a little tender loving care to achieve best results.

Seed Slicer Benefits

Seed slicers create shallow grooves in the soil that are ideal for overseeding an existing lawn. The exposed soil allows the seed to contact the soil for improved germination. The process of cutting the grooves also loosens a small amount of thatch, according to the University of Wisconsin.

Core Aeration Benefits

According to Kansas State University, core aerators penetrate the soil to a depth of 3 to 4 inches and extract a round core of earth. The hole allows air and water to enter, helping to reduce soil compaction. The cores of earth on top break down and mix with any existing thatch. The combination of soil, bacteria and thatch creates a rapid breakdown of the built-up thatch layer.

Bottom Line

Although both can be used to overseed a lawn, the core aerator has the additional benefits of reducing soil compaction and breaking down thatch effectively. The versatility of the core aerator

makes it the better choice.

References

• University of Wisconsin Extension: Lawn Aeration and Topdressing
• Kansas State University: Horticulture Report--Aerating Your Lawn

Resources

• University of Missouri Extension: Cool-Season Grasses