Lawn Diseases and Pests Guide in Nashville and Middle Tennessee
Topic guide

Lawn Diseases and Pests Guide

Brown patch, dollar spot, grubs, armyworms, chinch bugs and fire ants: signs, timing and what to do about each.

When a lawn turns brown, the cause is often not drought. Fungal diseases such as brown patch and dollar spot appear in warm, humid weather. Insects such as grubs, armyworms and chinch bugs feed on roots and leaves, usually in late summer. Animals like moles dig for grubs, and fire ants build mounds in sunny turf. Because the symptoms overlap, a careful look at the pattern, the timing and the plant itself is the first step.

Response depends on the cause. Fungus is managed with good watering and mowing habits plus fungicide when needed. Insects are scouted and treated when counts justify it, and a grub preventive in early summer protects roots before damage starts. Healthy turf, correct watering and good timing prevent many problems before they begin. If you are unsure, a quick inspection can save you from treating the wrong thing and wasting a season.

Best for

  • Homeowners with brown patches
  • Anyone seeing animals dig in the lawn
  • Owners planning summer prevention
  • DIYers wondering what to treat

Strengths

  • Correct ID leads to the right treatment
  • Prevention is often easier than cure
  • Healthy turf resists many problems
  • Timing makes treatments effective

Keep in mind

  • Symptoms can look alike
  • Wrong product wastes money
  • Some pests need repeat visits
  • Weather can slow recovery
The details

What defines Diseases and Pests Guide

Look at the pattern

Circles, strips, irregular.

Fungus loves humidity

Warm, wet nights.

Grubs in late summer

Eat roots.

Fire ants in sun

Mounds after rain.

Prevention works

Healthy turf.

Identify first

Avoid wrong treatment.

Questions

Diseases and Pests Guide FAQ

How do I tell disease from drought?

Drought patches respond to watering. Disease patches keep spreading, often with a ring or lesions on blades.

When should I treat for grubs?

Preventives go on in late spring to early summer, before eggs hatch.

Do I treat every year?

Not always. Scouting and history guide the decision.

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