Dethatching and aeration are both ways to help your lawn breathe, but they tackle different issues:

• Dethatching removes the layer of dead grass and roots (thatch) that can build up on top of the soil. This helps water and nutrients reach the roots more easily.
• Aeration creates small holes in the soil, either by removing plugs or poking with spikes. This loosens compacted soil and lets air, water, and fertilizer get down to the roots.

Some lawns benefit from both, depending on soil type and grass health.

There are a few signs your lawn might need aeration:

• Water pools on the surface after rain instead of soaking in.
• The soil feels hard or compacted when you walk on it.
• Grass looks thin, patchy, or isn’t growing well.
• Heavy foot traffic or use of lawn equipment has packed down the soil.

If you notice these issues, aerating can help your grass get the air and nutrients it needs to grow stronger.

You can use a manual aerator on a large yard, but it may take more time and effort compared to powered or tow-behind options. Manual tools are great for small to medium lawns or for spot-treating problem areas. For bigger spaces, consider breaking the job into sections or looking into tow-behind or electric aerators to make the process easier and more efficient.

How often you dethatch or aerate depends on your lawn’s condition and soil type:

• Dethatching is usually needed every 1–3 years, or when the thatch layer is thicker than half an inch.
• Aeration is often done once a year, especially for lawns with heavy clay soil or lots of foot traffic.

Check your lawn each season to see if it’s showing signs of compaction or thatch buildup, and adjust your schedule as needed.

After aerating, it’s a great time to:

• Water your lawn to help the soil recover and encourage root growth.
• Apply fertilizer or overseed, since nutrients and seeds can reach the roots more easily through the holes.
• Leave soil plugs on the lawn—they’ll break down naturally and add nutrients back into the soil.

Regular care after aeration can help your grass grow thicker and healthier over time.