How To Get Rid Of Dead Spots In Lawn Now

What causes dead spots in my lawn? Dead spots in your lawn can be caused by a variety of factors, including pests, diseases, poor soil conditions, and improper watering.

Seeing brown, dead patches in your lawn can be disheartening. These unsightly areas not only detract from your home’s curb appeal but also signal underlying problems that need addressing. But don’t despair! You can repair bare patches and revive brown grass with the right approach. This guide will walk you through how to get rid of dead spots in your lawn, covering everything from diagnosis to detailed solutions.

How To Get Rid Of Dead Spots In Lawn
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Identifying the Culprit: Pinpointing the Cause of Dead Spots

Before you can fix dead spots, you need to know what’s causing them. Identify lawn diseases and other issues by looking closely at the affected areas.

Common Causes of Lawn Dead Spots

There are many reasons why your lawn might develop dead spots. Let’s break down the most frequent culprits:

Pest Infestations:
- Lawn Grubs: These C-shaped, white larvae feed on grass roots, causing the grass to turn brown and die. You might see areas that lift up like a carpet. To kill lawn grubs, you’ll need to use specific insecticides.
- Chinch Bugs: These small insects suck the juice from grass blades, causing irregular brown patches, especially in sunny areas.
- Armyworms and Cutworms: These caterpillars can chew through grass blades and stems, leaving behind bare spots.
Fungal Diseases:
- Brown Patch: This disease often appears as circular, brown patches that can grow quite large. The edges might have a darker, smoky ring. To treat lawn fungus like brown patch, you may need a fungicide and improved air circulation.
- Dollar Spot: Small, straw-colored spots that can merge into larger dead areas. These often have a sunken appearance.
- Pythium Blight: Causes rapid wilting and death, often appearing as greasy, water-soaked patches that turn brown.
Environmental Factors:
- Drought Stress: When grass doesn’t get enough water, it turns brown and can die. This is common in hot, dry weather. A water stressed lawn needs consistent hydration.
- Excessive Thatch: A thick layer of dead grass and organic matter can prevent water, air, and nutrients from reaching the soil and roots.
- Compacted Soil: Hard, packed soil restricts root growth and makes it difficult for water and air to penetrate. You’ll want to aerate compacted soil.
- Poor Drainage: Waterlogged areas can lead to root rot and fungal diseases. You need to improve lawn drainage.
- Pet Urine: The high nitrogen content in pet urine can “burn” the grass, creating small, dead spots.
- Chemical Spills: Accidental spills of gasoline, oil, or harsh fertilizers can kill grass.
- Mower Damage: Dull mower blades can tear grass, making it susceptible to disease and browning. Mowing too short can also stress the grass.
Physical Damage:
- Heavy Foot Traffic: Constant walking on the same areas can compact the soil and damage grass blades.
- Improper Mowing: Cutting grass too short or using dull blades can weaken it.

Steps to Repair Bare Patches and Revive Brown Grass

Once you have an idea of the cause, you can start the repair process. Here’s a step-by-step approach to repair bare patches and revive brown grass.

Step 1: Assess and Prepare the Damaged Area

Clear Debris: Remove any dead grass, weeds, rocks, or other debris from the dead spots. This is crucial for allowing new grass to establish.
Loosen Soil: Use a rake or a small shovel to loosen the top inch or two of soil in the affected area. If the soil is heavily compacted, consider aerate compacted soil in the entire lawn or at least around the dead spots. Aeration helps water, air, and nutrients reach the grass roots.

Step 2: Address the Underlying Cause

This is the most critical step. If you don’t fix the root problem, the dead spots will likely return.

For Pest Infestations:
- Kill Lawn Grubs: If you suspect grubs, apply a grub killer according to product instructions. Water it in to ensure it reaches the grubs in the soil. There are both curative and preventative options.
- Chinch Bugs/Other Pests: Use an appropriate insecticide for the specific pest you identify.
For Fungal Diseases:
- Treat Lawn Fungus: Apply a broad-spectrum fungicide if you’ve identified a fungal issue. Follow label directions carefully regarding application rates and reapplication intervals. Improving air circulation and reducing excess moisture can also help prevent future outbreaks.
For Environmental Issues:
- Watering: If drought is the culprit, adjust your watering schedule. Aim for deep, infrequent watering to encourage strong root growth. Water early in the morning to minimize evaporation. A water stressed lawn needs consistent moisture.
- Thatch: If thatch is thicker than 1/2 inch, consider dethatching your lawn with a power rake or dethatching machine.
- Compaction: Aerate compacted soil using a core aerator. This process pulls out small plugs of soil, allowing air and water to penetrate.
- Drainage: For areas with poor drainage, consider amending the soil with compost or sand, or installing a drainage system.
- Pet Urine: Dilute the urine by watering the spot immediately after your pet uses it. For existing spots, you may need to replace the soil and reseed.

Step 3: Rebuild and Replant

Once the cause is addressed, it’s time to get new grass growing.

Choose the Right Seed: Select a grass seed mixture that matches your existing lawn and is suitable for your climate and light conditions. Look for varieties that are disease-resistant and drought-tolerant.
Overseed Thin Lawn Areas: Spread a thin, even layer of grass seed over the prepared bare patches. You can use a spreader for larger areas. Aim for about 10-12 seeds per square inch. To overseed thin lawn areas effectively, ensure good seed-to-soil contact.
Apply Starter Fertilizer: Use a starter fertilizer that is formulated to help new grass establish. This type of fertilizer contains a higher level of phosphorus. Fertilize dormant grass areas as well, if applicable, to encourage growth when conditions improve.
Cover the Seed: Gently rake a thin layer of compost or topsoil over the seed. This helps retain moisture and protect the seeds from birds.
Water Gently and Consistently: Keep the seeded area consistently moist, but not waterlogged. Water lightly two to three times a day until the seeds germinate and the new grass is about an inch tall. Once the grass is established, gradually reduce watering frequency and increase the amount of water per session.

Step 4: Ongoing Care and Maintenance

After the new grass has grown, continued proper care is essential.

Mowing: Once the new grass reaches about 3 inches tall, you can begin mowing. Always use a sharp mower blade and avoid cutting more than one-third of the grass blade at a time.
Watering: Continue to water deeply and infrequently.
Fertilizing: Follow a regular fertilization schedule appropriate for your grass type. This might include fertilizing dormant grass in the fall to build root strength for the following season.

Troubleshooting Common Lawn Problems

Let’s dive deeper into some specific scenarios and how to tackle them.

Reviving Brown Grass Due to Drought

If your lawn is brown simply because it hasn’t received enough water, it might not be dead, just dormant.

Signs of Drought Stress:

Grass blades turn a dull grayish-green.
Footprints remain visible on the lawn for a long time after you walk on it.
The grass starts to turn brown, often in patches.

Revival Steps:

Water Deeply: Soak the entire lawn with at least 1 inch of water. This encourages deeper root growth.
Water Infrequently: Allow the soil to dry out slightly between waterings. This prevents overwatering and fungal issues.
Adjust Mowing: Raise your mower height. Taller grass shades the soil, reducing evaporation and keeping roots cooler.
Fertilize (Carefully): Once the grass shows signs of recovery, a light application of a balanced fertilizer can help. Avoid heavy fertilization when the grass is stressed, as this can demand more water than the plant can supply.

Dealing with Lawn Grubs

Kill lawn grubs is a common task for many homeowners. Grub damage often looks like large dead patches that can be easily lifted.

Identification:

Look for C-shaped, white larvae in the soil.
Check for increased activity of birds, moles, or skunks, as they feed on grubs.

Treatment:

Insecticides: Apply a grub control product when grubs are most vulnerable (typically late summer or early fall, or early spring). Always follow label instructions precisely.
Milky Spore: This is a natural grub control that targets Japanese beetle grubs. It takes a few years to become fully effective but is a more eco-friendly option.
Nematodes: Beneficial nematodes can be applied to the soil to parasitize and kill grubs.

Aerating Compacted Soil

Compacted soil is a major impediment to a healthy lawn. Aerate compacted soil to improve its structure.

Signs of Compaction:

Water pools on the surface after rain.
Grass is thin and struggles to grow.
Soil is very hard and difficult to penetrate with a screwdriver.
You see a lot of thatch.

Aeration Process:

Timing: Aerate when the grass is actively growing. For cool-season grasses (fescue, bluegrass, ryegrass), this is typically spring or fall. For warm-season grasses (Bermuda, Zoysia, St. Augustine), do it in late spring or early summer.
Method:
- Core Aerator: This machine pulls out plugs of soil, leaving holes in the lawn. This is the most effective method.
- Spike Aerator: This machine punches holes but doesn’t remove soil. It’s less effective for severe compaction.
After Aeration: Leave the soil plugs on the lawn; they will break down. You can then overseed and fertilize to take advantage of the newly loosened soil.

Improving Lawn Drainage

Poor drainage leads to soggy soil, which can kill grass and promote disease. To improve lawn drainage, consider these methods:

Amend Soil: Incorporate organic matter like compost into the soil. This improves soil structure and allows for better water percolation.
Level Low Spots: Fill in low-lying areas with a good quality topsoil to prevent water from collecting.
Install French Drains: For persistent waterlogging, a French drain system can channel excess water away from the problem area.
Regrade the Lawn: If the slope is consistently wrong, regrading might be necessary to direct water flow away from the house and problem areas.

Fertilizing Dormant Grass

While the focus is often on actively growing grass, proper fertilization can help prepare your lawn for stress and recovery. Fertilize dormant grass in the fall is particularly beneficial.

Fall Fertilization: A fall application of fertilizer helps the grass roots store energy for the winter and promotes early spring green-up.
Spring Fertilization: Once the grass begins to green up, a spring feeding provides essential nutrients for growth.
Summer Fertilization: Be cautious with summer fertilization, as it can stress the grass if conditions are hot and dry.

Practical Guide: Repairing Bare Patches

Let’s break down the process of repair bare patches into actionable steps.

Step-by-Step Patch Repair:

Preparation:
- Remove all dead grass and weeds from the patch using a rake or trowel.
- Loosen the soil to a depth of about 2-3 inches.
- If the area is prone to compaction, consider a small core aeration of the patch.
Soil Improvement:
- Mix in a small amount of compost or good quality topsoil to improve the soil’s texture and fertility.
- Ensure the amended soil is level with the surrounding lawn.
Seeding:
- Choose a grass seed blend that matches your existing lawn.
- Spread the seed evenly over the prepared area. A good rule of thumb is to apply about 10-12 seeds per square inch.
- Lightly rake the seed into the soil to ensure good seed-to-soil contact.
Fertilizing:
- Apply a starter fertilizer that contains phosphorus to promote root development.
Watering:
- Water the newly seeded area gently but thoroughly.
- Keep the soil consistently moist, but not waterlogged, until the grass germinates and grows to about 1-2 inches tall. This might require watering lightly a few times a day.
Protection:
- Consider covering the patch with a light layer of straw or a biodegradable mulch to retain moisture and protect the seeds from birds.
Maintenance:
- Once the new grass is established (about 3-4 inches tall), you can begin mowing it.
- Continue to water regularly, gradually transitioning to a deeper watering schedule.

Table: Common Lawn Problems and Solutions

Problem	Cause	Solution
Dead Patches	Grubs, fungal disease, dog urine, chemical spill, extreme drought	Identify the cause. Treat pests/diseases. Amend soil. Reseed. Water correctly.
Yellowing Grass	Nutrient deficiency, overwatering, underwatering, disease	Fertilize dormant grass or stressed grass appropriately. Adjust watering schedule. Treat lawn fungus if suspected.
Thin Lawn	Poor soil, lack of nutrients, disease, grub damage	Overseed thin lawn areas. Fertilize dormant grass. Aerate compacted soil. Apply grub control if needed.
Brown, Dry Patches	Drought stress, chinch bugs	Water stressed lawn deeply. Apply insecticide if chinch bugs are present.
Greasy or Slimy Areas	Pythium blight (fungus)	Improve air circulation. Reduce watering. Treat lawn fungus with a fungicide.
Moss	Poor drainage, low pH, shade, compacted soil	Improve lawn drainage. Add lime to raise pH. Improve air circulation. Aerate compacted soil. Plant shade-tolerant grasses.
Crabgrass	Annual weed that thrives in heat and drought	Preventative pre-emergent herbicides in early spring. Hand-pull or use post-emergent herbicides on young plants.

Frequently Asked Questions (FAQ)

Q: How quickly can I expect to see results after repairing dead spots?

A: It depends on the cause and the method used. For simple reseeding, you might see germination within 7-21 days, with visible growth in a few weeks. If you’re dealing with pests or diseases, it might take longer as you work to eliminate the underlying problem.

Q: Can I reseed my lawn in the summer?

A: While it’s possible, summer is generally not the ideal time to reseed. The heat and potential for drought can make it difficult for new grass to establish. Early fall or early spring are typically the best times for reseeding.

Q: My lawn has brown patches, but I don’t see any bugs. What else could it be?

A: If you don’t see bugs, consider fungal diseases, a water stressed lawn, or compacted soil. Look for rings or patterns in the brown areas, which can indicate fungal issues. If the soil feels hard, it’s likely compacted, and you’ll need to aerate compacted soil.

Q: How do I know if I have lawn grubs?

A: The best way to check for grubs is to dig up a small section of your lawn in a damaged area. If you find small, white, C-shaped larvae in the soil, you likely have a grub problem.

Q: What’s the best way to kill lawn grubs?

A: You can use either chemical or biological insecticides. Apply them when grubs are feeding near the surface, usually in the spring or fall. Always follow product instructions carefully.

Q: My lawn is thin in many areas. How do I overseed thin lawn?

A: First, prepare the areas by lightly dethatching and loosening the soil. Then, spread a good quality grass seed mixture and rake it lightly into the soil. Keep the area moist until the new grass germinates.

Q: When is the best time to fertilize dormant grass?

A: For cool-season grasses, fall is the most important time to fertilize. This helps the grass store energy for winter and prepare for spring growth. Light fertilization in early spring can also be beneficial.

By understanding the root causes and following these detailed steps, you can effectively get rid of dead spots in your lawn and enjoy a lush, green, healthy landscape. Remember to be patient, as lawn repair and restoration take time and consistent care.