
For a lawn that stands out, you have to go beyond mowing or watering. Dethatching is a frequently overlooked, yet highly beneficial, practice. The benefits of dethatching your lawn include better air, water, and nutrient absorption; increased curb appeal; stronger grassroots; less soil compaction; and fewer pests, diseases, and weeds.
What’s dethatching?

Dethatching gets rid of dead grass, roots, and other organic material (also known as thatch) that accumulates between the soil and your lawn. When this layer grows thicker than ½ inch in warm-season grasses or ⅓ inch in cool-season grasses, it prevents air, nutrients, sunlight, and water from reaching the soil and roots. Then, it’s time to dethatch your lawn.
Dethatch your cool-season grass (typical in the northern parts of the U.S.) in early spring or late summer to early fall, during the grass’ active growing season.
Dethatch your warm-season grass in late spring to early summer, also during its vigorous growth stage. You’ll find warm-season grasses in the southern parts of the U.S. or in the Transition Zone (the USDA hardiness zone map can help you determine which grasses and plants thrive in your location).
According to Gil Landry, turf specialist at the University of Georgia Extension Service, “You might want to hold off on your normal dethatching while your grass is still dormant. It would be safer to wait until after the turf greens up and is growing well but before the hot, dry weather of July and August.”
7 reasons why you should dethatch your lawn
Dethatching offers several benefits for your lawn and soil.
1. Creates better air, water, nutrient, and sunlight absorption
Remove thatch to improve air circulation to the soil and roots, improve water penetration, help fertilizer nutrients reach the soil more effectively, and increase sunlight exposure.
This ensures hydrated roots, reduces standing water and runoff, and supports healthier grass growth by allowing photosynthesis to occur successfully.
2. Helps develop stronger grassroots
According to Landry, turf specialist, if your thatch layer is thicker than half an inch, “most of the grass root system is growing in the thatch, not in the soil.”
Removing thatch exposes the soil and helps grass direct more energy toward root production, stimulating new root growth. The stronger the root system, the better it can absorb water, nutrients, and air to maintain its health. Lawns with deeper roots can also better withstand drought, heat, and foot traffic.
3. Prevents soil compaction

When combined with aeration, dethatching prevents compacted soil and improves lawn health. Thatch contributes to soil compaction by preventing the natural breakdown of organic matter. When your soil is compacted, it can cause runoff and flooding in your yard.
By getting rid of thatch, you maintain loose soil, promoting root expansion and lawn health. With less thatch, lawn aeration and overseeding also become more effective. You’ll foster better seed-to-soil contact, which is vital for germination, and reduce competition for new seedlings.
4. Discourages pests and diseases
Thatch can encourage pests and diseases by retaining moisture and providing shelter. It can harbor bacteria and fungi that cause lawn diseases and allow insects to thrive in its thick layers. Not to mention that it prevents pesticides from penetrating the soil and taking effect.
Removing thatch on time can reduce the habitat necessary for pathogens and pests to grow and reproduce.
5. Enhances microbial activity
Excess thatch can limit the activity of beneficial soil microbes by reducing oxygen. Dethatching helps rebalance the soil, encouraging the microbes to decompose organic material, recycle nutrients, and boost soil health. The result? More fertile soil that is prepared for growing grass.
6. Increases your home’s curb appeal
Thatch can make your lawn look patchy and unhealthy. It also causes diseases that can make your lawn look like an eyesore. Clearing away the dead organic material allows new grass to grow evenly, creating a thick, lush, eye-catching lawn.
7. Prevents weeds

Dethatching creates an environment less conducive to weed growth. It removes possible warm places for weed seeds to settle, germinate, and sprout in your lawn. By dethatching, you create better conditions for your grass to grow dense and healthy, crowding out weeds and reducing the need for pre-emergent herbicides and post-emergent herbicides.
Plus, a dethatched lawn feels softer underfoot.
FAQ about the benefits of dethatching your lawn
Should I DIY dethatch my lawn or hire a professional?
It can be tough to decide between DIY and professional dethatching services. The decision is based on your experience, the size of your lawn, the severity of the thatch, and your available time and budget.
Pros of DIY dethatching:
- Cost-effective
- Allows you to work on your own schedule and at your own pace
- Provides a sense of accomplishment at the end
Cons of DIY dethatching:
- You need to rent or buy a dethatching rake or machine, which can be costly and difficult to use (depending on the type)
- Dethatching is labor-intensive, especially for large lawns
- If you’re inexperienced, you risk damaging your lawn or injuring yourself
Pros of professional dethatching:
- Professional dethatchers have the knowledge and experience to dethatch your lawn correctly and efficiently
- They use specialized, commercial-grade equipment that is more effective
- Saves time and effort
Cons of professional dethatching:
- Professional services can be expensive
- You need to work around the professional’s schedule, which may not align with your own
- It can be challenging to find a reliable expert
Should I dethatch my lawn when the grass is young?
Dethatching can harm young grass because it involves disturbing the soil and roots. Due to weaker roots, young grass may not tolerate this process well.
Dethatch your lawn when the grass is mature and has a strong root system. Mature grass is more resilient and can recover better from dethatching. Wait at least one full growing season after planting seed or sodding.
How often should I dethatch my lawn?
It all depends on the thickness of your thatch layer.
- If your grass type typically produces abundant thatch, dethatch annually as part of your lawn care routine.
- If your thatch layer is less than half an inch, dethatch every other year.
- If your thatch layer is 1 ½ inches, dethatch once in the spring and once in the fall (according to your grass type).
How do I know I need to dethatch my lawn?
You may have to dethatch your lawn if you notice signs such as:
- Grass that is spongy and springy to the touch
- Grass blades that are weak, thin, or dull
- Weeds that grow in the grass
- Runoff that happens when the soil isn’t absorbing much water
- Minimal grass growth
- Patches caused by diseases or pests
A local pro can help
Regular dethatching can greatly improve your lawn’s health and visual appeal, but it takes time and effort you may not want to invest.
If a DIY dethatching project feels like too much, hire a local Lawn Love professional for expert help. Let them handle it, and watch your lawn flourish.
Main Photo Credit: Ingo Bartussek | Adobe Stock