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Nocatee Lawn & Landscape Guide

Why Is My St. Augustine Grass Turning Yellow?

A homeowner-friendly guide to yellow St. Augustine grass in Nocatee and Northeast Florida.

Quick answer: Yellowing can result from irrigation problems, nutrient issues, root stress, excessive moisture, shade, pests or disease. Look for patterns before assuming the lawn simply needs fertilizer.

Check whether yellowing follows irrigation zones

If the color change lines up with sprinkler coverage, start by checking watering patterns and system performance.

Look for wet soil

Roots under prolonged wet conditions can struggle even when the lawn appears to have plenty of water.

Think about shade

Turf growing under dense trees or on the shaded side of a home may thin or discolor because it is receiving less light than surrounding areas.

Do not automatically fertilize

Yellow turf does not always mean nutrient deficiency. Follow product labels and current local fertilizer rules, and diagnose the underlying problem first.

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