SoIlMend Home Lawn Diagnostic Matrix Learn About Aeration Soil Testing Guide →
IlMend Lawn Diagnostic Center

Is Your Lawn Struggling?
Let's Find Out Why.

Professional lawn restoration starts with an accurate diagnosis. Use our simple "Field Tests" to identify the root cause of your grass issues.

3 DIY Tests Symptom Matrix Soil Science No Equipment Needed
Section 1

The "Quick Check" Diagnostic Matrix

Match what you see in your yard to the most likely cause — and the right fix.

What You See (Symptom) Likely Culprit The "Mend"
Dull, bluish-grey grass; blades curling; footprints stay visible after walking. Drought Stress
Water Deficiency		 Deep soak early morning (6 AM – 10 AM).
Patches of yellow/brown with visible spots or an orange "rust" coating on blades. Fungal Disease Improve airflow; reduce evening watering; apply targeted fungicide.
Thin grass, consistently damp soil, and spreading green fuzzy growth. Moss / Poor Drainage Aerate the soil; trim overhanging trees to increase sunlight.
Spongy feel underfoot; grass sections pull up easily, like lifting a loose carpet. Grub Infestation Check for larvae beneath the turf; apply beneficial nematodes or milky spore.
Section 2

Pro Field Tests (Step-by-Step)

Three hands-on diagnostics you can do in under five minutes — no tools required.

🛠️
TEST A

The Screwdriver Test
(Soil Compaction Check)

1
Goal
Check if your roots can breathe and penetrate deep enough to survive drought.
2
Action
Press a standard 6-inch screwdriver straight down into the soil with hand pressure only.
✓Slides in easily — Soil structure is healthy.
✗Stops before 3" — Your soil is compacted.
💡 Solution: Schedule a Core Aeration session
👣
TEST B

The Footstep Test
(Hydration Check)

1
Goal
Check if your lawn needs immediate watering right now — before any visible browning begins.
2
Action
Walk across your lawn, then turn around and look at where you stepped.
✓Grass bounces back — Perfectly hydrated.
✗Footprints stay flat — Turgor pressure is low.
💡 Solution: Increase watering duration, not frequency
🌿
TEST C

The Moss Inspection
(Drainage & Light Check)

1
Goal
Identify whether moss is outcompeting grass due to shade, acidity, or persistent waterlogging.
2
Action
Kneel and examine shaded or damp patches. Look for fuzzy, low-growing green mats between grass blades.
✓No moss present — Drainage and pH are likely fine.
✗Moss spreading — Poor light, wet, or acidic soil.
💡 Solution: Aerate, lime the soil, trim shade trees
Section 3 · The Science Bit

The Healthy Soil Profile

Understanding what lives beneath your grass is the foundation of lasting lawn health.

Turfgrass Surface
Active leaf blades capturing sunlight and rainfall.
Thatch Layer (<0.5")
A thin mat is healthy; thick thatch blocks water and air.
Topsoil (6" minimum)
Nutrient-rich zone. Macro-pores allow oxygen and water exchange.
Sub-Surface Soil
Denser substrate. Compaction here suffocates root growth.
Root Zone
Deep roots anchor the plant and access stored moisture. Target: 6+ inches.
The Formula

Lawn health isn't magic — it's a balance of inputs and constraints:

Lawn Health = Sunlight + Water Soil Compaction × Nutrients

When compaction rises, the denominator grows and overall health collapses — even with perfect watering and fertilisation.

🌿 Pro Tip

A healthy lawn needs at least 6 inches of loose, nutrient-rich topsoil. Without that depth, roots can't anchor deeply enough to survive summer heat or drought stress.

🪱
Earthworms Present
Sign of living, healthy soil
🕳️
Macro-Pores Visible
Channels for air and water flow

Ready to Fix the Foundation?

Start with the right test, then build a restoration plan tailored to your soil type and climate.

Explore Soil Testing Guide → Learn About Aeration →

Guide