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Lawn Care Lessons for Aerating Your Lawn in the SpringJune 15th, 2021 by
A beautiful, lush lawn does wonders for your home’s curb appeal. But growing a flawless lawn isn’t always easy. After all, there are huge factors that are completely out of your control. Like the weather.
You’ll need to take steps to protect your lawn if you want it to look its best. Beyond maintaining a regular watering schedule and staying ahead of insects and lawn diseases, you need to keep your lawn aerated.
Regular aeration keeps grass healthy and disease-free.
Whether you’re interested in trying your hand at aerating your lawn or you’re gathering information before contacting a lawn maintenance company, you’ve come to the right place. In this article, we’ll explain what aeration is and give you all the information you need to make sure your lawn is properly aerated.
Let’s dive right in.
What Is Lawn Aeration?
Aeration is the process of exposing your soil to the air by removing plugs of soil from the turf. It’s a common part of spring lawn maintenance.
The resulting hollows allow water and nutrients to move through the soil, increasing the quality and health of grass over time and resulting in stronger roots. Healthier roots can withstand the hotter temperatures and droughts that often accompany summer weather.
Benefits of Lawn Aeration
Aeration is particularly useful for lawns that undergo a lot of foot traffic. The more a lawn is used, the more compacted the soil becomes.
This significantly reduces the spaces in the soil that would typically hold air.
Due to the decreased flow of air within the soil, compaction can negatively affect root growth. Roots need oxygen from the air to grow and absorb water and nutrients.
How Aeration Improves Your Lawn
- Aeration increases oxygen, water, and nutrient movement through the soil.
- Aeration creates stronger roots.
- Aeration allows for better absorption of rainfall and irrigation.
- Aeration helps develop a topsoil layer underneath the grass.
- Aeration prevents fertilizer and pesticide runoff.
- Aeration inhibits thatch accumulation.
Does My Lawn Need Aeration?
Aerating isn’t needed for every lawn.
If you’re unsure about whether you need to aerate, remove a six-inch-deep section of your lawn. If the grass roots only extend one to two inches into the soil, it may be too compacted.
In that case, your lawn could significantly benefit from aeration.
Additional Signs You Need Aeration
- Your lawn regularly receives heavy use.
- The thatch on your lawn is greater than one-half inch.
- You have dense clay soil.
If your lawn is not prone to soil compaction, then it will likely grow normally without the need for aeration.
Natural factors such as earthworm activity and winter freeze-thaw cycles often loosen compacted soil. Do not aerate your lawn during the first year your lawn is newly seeded or sodded.
When Should I Aerate My Lawn?
Most lawns should be aerated once or twice a year, depending on the soil, grass type, and amount of use. A lawn experiencing heavy traffic should be aerated twice a year. A well-established lawn with little traffic, on the other hand, can be aerated once a year.
If You Have Cool-Season Grass
- Aerate in the spring (April) before applying pesticides or in the fall (September) before overseeding.
- Not sure if you have cool-season grass? If your lawn is made up of Kentucky bluegrass or fescue, you do.
If You Have Warm-Season Grass
- Aerate in the summer—late May through July—when the grass is growing.
- You have warm-season grass if your lawn is made up of Bermuda or Zoysia.
How to Aerate Your Lawn
Aeration is hard work. Not only that but the bigger your lawn, the harder the work.
If you have a particularly large lawn, your best bet is to find a lawn maintenance company. They’ll ensure your lawn is aerated correctly and take the necessary steps to ensure that your grass stays healthy year-round.
Plus, you can just kick back while someone else does all that hard work!
A lawn care professional will also be able to help your lawn by analyzing your soil type, grass health, and the best time of year for aeration. And lawn care professionals will have a range of machines with different-sized tines and weights for the best amount of penetration for your soil.
If you have a smaller lawn (or if you’re sure you’re up for a big project), you can take a crack at aerating your lawn, yourself. If that’s your plan, you’re in luck. We have all the information you’ll need to get started.
But first, there are two important decisions you’ll need to make.
Manual or Automated?
Manual aerators are tools that are powered by you. Aerator attachments for shoes, handheld spikes, and core aerators are the most popular.
Automatic aerators are motor-driven machines. If you go this route, renting an aerator from a home improvement store is probably the best option. Unless aerating is old hat for you, ask for a demonstration of how the machine works before you take it home.
Core or Spike?
Core aeration is what you should aim for. This aeration method removes small cylinders of soil approximately three inches in depth. The holes left behind bring water and air into the soil, which encourages healthy grass growth.
Spike aeration creates small holes in the soil, but because the spikes don’t remove any soil, all you’re doing is further compacting the dirt—exactly what you’re trying to fix. Spike aerators are counterproductive, so take a pass on this method.
Once you’ve decided on the tool and method, it’s time to get started.
What to Do Before Aerating Your Lawn
- Mow your lawn before watering and aerating it.
- Be sure to water your lawn thoroughly two days before aeration. The tines on the aeration machine penetrate loose soil better than dry soil. If the soil is too dry, the tines will have trouble effectively piercing the ground.
- Avoid aerating immediately after an extended period of rainfall. Soil that’s too wet will stick to the inside of the tines instead of falling easily back into the lawn.
- Mark sprinkler heads, cables, septic lines, and any other obstacle that may be in the way while aerating.
- Plan to pass over your lawn in two or more directions. This ensures a more even, thorough coverage. You should aim for 20 to 40 holes per square foot.
What to Do After Aerating Your Lawn
Lawn care after aeration is important. Luckily, it’s relatively straightforward.
- Leave the soil plugs on the lawn to decompose and filter back into the holes left by the aeration machine. Your lawn mower will often break them up and help work them back into the soil within two to three weeks.
- Apply fertilizer immediately after aerating your lawn to put nutrients into your grass roots. This allows the grass to better prepare for the summer heat. Growing a thick, healthy lawn is useful in preventing weeds as well.
- Reseed your lawn, especially in areas of the lawn where the grass is thin. The seeds mix with the soil plugs and have better access to non-compacted soil following aeration.
The Bottom Line
Aeration is an important part of keeping your lawn healthy and beautiful. Whether you do it yourself or hire a lawn expert, make sure it gets done.
Keep in mind all good things take time. That includes your lawn.
After your lawn is aerated, be patient. You probably won’t see instant results. While root growth and the overall health of your lawn begin to improve immediately following aeration, visual results typically come after two or three aerations.
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