09/04/2026
🕵️ Lawn Detective: What’s Wrong With This Lawn?
A. Not enough water
B. Lawn disease
C. Insect damage
D. Too much fertilizer
🤔 What's your guess? Find out the answer below
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🔎 THE ANSWER: C — INSECT DAMAGE
In this case, the culprit is chinch bugs.
Chinch bugs are tiny insects that feed on grass by piercing the plant and sucking out its juices. They can also inject substances that interfere with the plant's ability to move water, which can leave sections of turf looking stressed, yellow, or straw-colored.
And here's what makes them tricky...
💧 Watering may not fix the problem.
If your irrigation is running properly but the affected areas continue to expand or worsen, it's worth considering whether insects are involved.
🐞 Signs to watch for:
• Irregular yellow, brown, or straw-colored patches
• Damage that continues to spread despite adequate watering
• Areas of turf that appear thin or stressed
• Damage that becomes more noticeable during hot, dry weather
• Chinch bugs or their tiny nymphs hiding near the base of the grass
🌱 Why are they worse during hot weather?
Chinch bugs thrive when conditions are warm and dry. Stressed turf also has a harder time recovering from feeding damage, which can make the problem look even worse.
💡 The Lawn Detective's takeaway:
Don't automatically assume brown grass needs more water.
Sometimes the irrigation is doing its job—but something else is damaging the grass.
That's why identifying the cause is just as important as treating the symptom.