How to Tell If Your Lawn Needs Fertilizer (And Which Kind)

Yellow or thin grass does not automatically need more fertilizer. A lawn can lose color because of dormancy, shade, drought, wet roots, disease, insects, or a nutrient problem. Applying fertilizer without identifying the cause can waste money and complicate diagnosis.

First, identify the grass and season

Bermuda, Zoysia, Centipede, and tall fescue have different nutrient requirements and growth cycles. If a warm-season lawn is dormant, feeding it will not make it behave like a cool-season lawn. Review the grass-specific seasonal calendar.

Compare the pattern

Is the whole lawn pale, or only a wet corner? Are shaded areas thin while sunny areas look healthy? Is the discoloration spreading, or does it match a recent application path? Photograph the pattern and note changes. A localized problem often deserves a localized investigation.

Use a soil test for the right questions

A routine soil test helps assess pH and certain nutrient levels and provides recommendations for the intended crop or grass. Supply the actual grass type. It is not a test for every possible disease or the full explanation for every yellow patch. UGA's soil-testing instructions explain how grass-specific information supports useful recommendations.

Keep the report and share it with your lawn-care provider. Avoid adding lime simply because a neighbor uses it.

Review the treatment history

Record what was applied, when, and over how much area. Lawn area is different from total lot size. Include combination weed-and-feed products when checking previous applications. More product is not automatically more effective.

What a fertilization plan should explain

Ask which grass the plan is designed for, when feeding is appropriate, and whether any amendments follow the soil test. Confirm watering and re-entry instructions for each application. Expect the program to account for lawn condition rather than repeat the same treatment at every visit.

GopherTurf's fertilization service is part of an eight-visit turf program; eight visits do not mean eight nitrogen applications. See current package prices, or request a fertilization quote with the grass type, symptoms, and recent treatment history.