Groundskeeper

Lawn Disease Prevention: Healthy Grass Care

September 19, 2025
Groundskeeper Team
5 min read
Lawn Disease Prevention: Healthy Grass Care

Seeing brown patches or unusual spots on your lawn can be disheartening. Many of these issues are caused by fungal diseases, which can spread quickly under the right conditions. The good news is that the best defense against lawn disease is a good offense. A healthy, well-maintained lawn is naturally more resistant to these problems. Prevention through proper cultural practices is always the best strategy.

🌿 The Best Prevention: Healthy Lawn Practices

Most lawn diseases take hold when turf is stressed. Keep your lawn healthy with these key practices.

💧 Water Deeply and Infrequently

Water in the early morning to allow the grass blades to dry during the day. Wet grass overnight is a primary cause of fungal growth. Water long enough to soak the root zone, then wait until the lawn shows signs of needing water again.

✂️ Mow High with Sharp Blades

Mow at a higher setting for your grass type. Taller grass has deeper roots and is more resilient. Dull mower blades tear the grass, creating wounds that are entry points for disease.

aeration Aerate the Soil

Core aeration relieves soil compaction, which improves drainage and airflow to the roots, reducing the conditions that favor fungal diseases.

🌱 Fertilize Properly

Feed your lawn based on its needs for the season. Too much nitrogen, especially in the summer, can encourage diseases like brown patch.

🔍 Identifying Common Lawn Diseases

Knowing what to look for can help with early treatment.

brown patch
Brown Patch: Irregular, circular patches of brown, dead-looking grass, often with a darker "smoke ring" on the outer edge. Common in hot, humid weather.
dollar spot
Dollar Spot: Small, silver-dollar-sized circles of tan or straw-colored grass that can merge into larger patches.
red thread
Red Thread: Appears as irregular patches of dying grass with distinct pink or reddish threads visible on the grass blades.

If a disease does appear, the first step is to correct any underlying cultural issues (like improper watering). Fungicide treatments can be effective but should be used as part of a comprehensive management plan, not as a standalone solution.

Don't let lawn disease ruin your beautiful turf. The Box Advantage Group offers professional lawn care programs that focus on building a healthy, resilient lawn. If you're struggling with disease, contact our groundskeeping experts for proper diagnosis and treatment.

Lawn DiseasePreventionGrass CareIdentification
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