Stop guessing. Start diagnosing.

If your lawn is struggling, the temptation is to head straight to the garden center and start buying products.

More fertilizer.

More weed killer.

More grass seed.

Unfortunately, that's exactly how homeowners end up spending hundreds of dollars without solving the real problem.

Professional lawn restoration always starts with a diagnosis—not a treatment.

At DeepRoots Lawn Company, we've learned that two lawns can look identical from the street while having completely different underlying issues. One might need aeration. Another might simply need irrigation adjustments. A third may only need better mowing habits.

This seven-day lawn investigation will help you identify the real problem before spending another dollar.

Day 1: Check Your Irrigation

Water is the foundation of every healthy lawn.

Many lawns that appear \"dead\" are simply receiving too little—or too much—water.

Walk your yard while the sprinklers run.

Look for:

Dry spots
Broken sprinkler heads
Overspray onto sidewalks
Areas staying soggy
Uneven spray patterns
Low-pressure zones

Then ask yourself:

Is every part of the lawn getting watered?
Are some areas drying out faster?
Are tree roots stealing moisture?

One easy test:

Place several empty tuna cans or rain gauges around the yard while your irrigation runs.

If some containers collect twice as much water as others, your irrigation needs adjustment before buying fertilizer or seed. Uniform watering is essential for healthy turf.

Day 2: Check Your Soil

Grass grows from the soil—not from fertilizer.

Healthy soil should feel:

Slightly moist
Crumbly
Easy to penetrate

Poor soil often feels:

Rock hard
Dusty
Extremely sandy
Sticky clay

Grab a screwdriver. Push it into the soil. If it's difficult to push in more than a few inches after watering, your soil is likely compacted.

Also notice:

Standing water
Cracking soil
Bare patches
Thin grass

These clues often indicate soil problems rather than nutrient deficiencies.

Day 3: Inspect Your Mowing Habits

Your mower can either strengthen your lawn—or slowly weaken it.

Ask yourself:

Am I cutting too short?
Are my mower blades sharp?
Am I removing more than one-third of the grass blade?
Am I mowing during extreme afternoon heat?

Grass that's cut too low develops:

Shallow roots
Increased weed pressure
Heat stress
Faster water loss

Proper mowing is one of the least expensive improvements a homeowner can make, yet it has one of the biggest impacts on turf health.

Day 4: Identify Your Weeds

Not all weeds tell the same story.

Different weeds often point to different lawn conditions.

Examples:

Dandelions

Often thrive in thin, weakened turf.

Crabgrass

Frequently appears where the lawn is sparse or where pre-emergent herbicides weren't applied.

Plantain

Common in compacted soils.

Spurge

Often invades hot, dry, stressed lawns.

Rather than asking,

\"How do I kill these weeds?\"

Ask:

\"Why are these weeds here?\"

Healthy, dense turf naturally crowds out many weeds before they become established.

Day 5: Look for Insects

Not every brown patch is caused by drought.

Some are caused by insects feeding below the surface. Gently pull on brown grass. If it lifts up like loose carpet, inspect the soil underneath.

Look for:

White grubs
Surface tunnels
Chewed roots
Birds digging excessively
Skunks or raccoons tearing up turf

These can all indicate insect activity.

If insects aren't present, avoid applying insecticides \"just in case.\" Proper identification should always come before treatment as part of an integrated pest management approach.

Day 6: Test for Soil Compaction

Compaction is one of the most overlooked lawn problems.

Years of:

Kids playing
Pets running
Heavy equipment
Foot traffic
Clay soils
Natural settling

can squeeze oxygen out of the soil.

Roots struggle.

Water can't penetrate.

Fertilizer becomes less effective.

Try the screwdriver test again across several areas of the lawn.

If it's difficult to penetrate, your lawn may benefit from core aeration.

University research consistently shows that core aeration improves water infiltration, root development, and oxygen movement through compacted soils.

Day 7: Check Your Thatch Layer

Many homeowners mistake thatch for healthy soil. It isn't. Thatch is a layer of dead stems, crowns, and roots that builds between the green grass and the soil. Pull back a small section of turf. Measure the brown layer.

Less than ½ inch

✅ Healthy

More than ½ inch

Your lawn may benefit from dethatching.

Excessive thatch can:

Prevent water from reaching roots
Reduce fertilizer effectiveness
Encourage shallow rooting
Increase drought stress
Create ideal conditions for pests and disease

Interestingly, grass clippings themselves contribute very little to thatch. Excessive fertilization, overwatering, and improper mowing are much more common causes.

Your Lawn Investigation Scorecard

At the end of the week, ask yourself:

Is my irrigation working evenly?
Does my soil drain properly?
Am I mowing correctly?
What are my weeds telling me?
Are insects actually present?
Is my soil compacted?
Is there excessive thatch?

The answers will help you prioritize the right solutions instead of buying products you may not need.

Common Findings and What They Mean

Problem FoundLikely Solution

Uneven watering

Sprinkler adjustment or repair

Hard soil

Core aeration

Thin lawn

Overseeding

Excessive thatch

Dethatching

Sparse turf with weeds

Lawn restoration and overseeding

Poor growth despite watering

Soil evaluation and fertilization

Insect damage

Proper pest identification and targeted treatment

Why This Matters in the Tri-Cities

Our hot, dry summers, limited rainfall, and naturally variable soils make lawn problems more complex than they appear. A lawn that struggles in Kennewick may have a completely different issue than one in Richland or Pasco—even if they look similar. That's why successful lawn restoration begins with observation rather than assumption. The good news? Most major lawn issues leave visible clues long before they require expensive repairs. Spend one week investigating your lawn, and you'll be far more confident about your next step.

Frequently Asked Questions

How long should this inspection take?

About 10–15 minutes per day for one week.

Should I fertilize before doing this inspection?

No. Understanding the underlying problem first helps you avoid unnecessary treatments.

How do I know if my lawn needs aeration?

If water pools on the surface, the soil is difficult to penetrate with a screwdriver, or the lawn receives frequent foot traffic, compaction may be limiting growth.

Is thatch always bad?

No. A thin layer (less than about ½ inch) is normal and can be beneficial. Excessive thatch, however, restricts water, air, and nutrient movement into the soil.

Why do weeds keep coming back after I spray them?

Because weeds are often a symptom—not the root cause. Improving turf density through proper watering, mowing, fertilization, aeration, and overseeding is one of the best long-term weed prevention strategies.

Sources

This article incorporates research and recommendations from:

Washington State University Extension – Home Lawns, Turfgrass Science, and Hortsense (Thatch Management)
Oregon State University Extension – Lawn & Turfgrass Resources, Efficient Lawn Irrigation, and Practical Lawn Care
Pacific Northwest Extension (Washington State University, Oregon State University, and University of Idaho) – Turfgrass Seeding Recommendations for the Pacific Northwest
Purdue University Turfgrass Science – Mowing, Dethatching, and Aerification
Utah State University Extension – Turfgrass Cultivation (Aerification)

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The Seven-Day Lawn Investigation

What to Check Before Spending Money

The Seven-Day Lawn Investigation: What to Check Before Spending Money

Transform Your Lawn Today

Schedule a seven-day investigation and give your yard the care it deserves.