Yard Answers › lawn fertilization
Why is my grass turning yellow?
Quick answer
Yellow grass most often means low nitrogen or iron, a soil pH problem, overwatering, or dull mower blades. Test soil pH first (aim for 6.0–7.0), then fertilize based on the results rather than guessing.
Step by step
- 1Test soil pH and nutrients
- 2Lime if pH is below 6.0
- 3Feed with a balanced fertilizer
- 4Sharpen mower blades
Gear that helps
3-in-1 Soil pH & Moisture MeterTest before you fertilize — the first step for yellow or patchy grass.$10–$20 · View on Amazon 
Home Soil Test KitChecks pH and key nutrients so you only add what your lawn needs.$15–$30 · View on Amazon As an Amazon Associate, My Yard earns from qualifying purchases.
Common questions
Can overwatering turn grass yellow?
Yes — soggy soil starves roots of oxygen and leaches nutrients.
How fast does fertilizer green up grass?
Usually within 1–2 weeks with adequate water.
Rather hire a local pro?
Find trusted lawn fertilization pros near you — call or text them directly.