You wake up one morning to find yellow spots on your lawn. You’re not happy.

Naturally, you want your grass green again, and fast. But what caused the problem?

What causes yellow grass?

At least three issues can make a healthy lawn change color from green to yellow.

1. Seasonal temperatures

Seasonal changes can cause a lawn to yellow naturally, because your grass is preparing for dormancy. This is normal and expected for the winter season. (In fall and winter, Bermuda grass can turn especially yellow, because Bermuda is a warm-season grass.)

2. Soil issues

Poor soil can have too few nutrients that help your grass stay healthy. This also makes grass susceptible to pests and diseases, which cause the grass to turn yellow.

A lawn expert can often detect the problem without lab-testing the soil’s composition.

3. Other problems

Yellow grass can be caused by excessive dog urine. Or someone may have accidentally spilled gasoline or other chemicals.

Or you may have scalped your lawn—that is, cutting it too short with a lawn mower. Scalping removes the green, healthy grass and leaves only yellow or brown grass.

How to fix a yellow lawn

We recommend several solutions to re-green your grass, based on the problem.

1. Seasonal temperature solutions

  • If dormancy makes your grass yellow, you can try overseeding with another grass type. Or wait until spring, when the grass will return to its growth-season green.

2. Soil solutions

  • If soil issues caused your yellow lawn, you can amend the soil with compost. This can help fix problems such as poor drainage and proper pH levels.
  • Adding fertilizer can also help repair a yellow lawn. A good fertilizer product can replace nutrients missing in the soil, such as nitrogen. (For example, Emerald Lawns provides fertilizer treatments throughout the year. We match different fertilizers based on the season, temperature, and your lawn’s unique needs.)
  • Nitrogen or iron supplements can restore yellow grass to green.

3. Other solutions

If dog urine or spills cause the grass to change color, try soaking the area with water or a little dish soap. These alone may help clean the staining substance off the grass.

If your lawn is being mowed too low, kick your lawnmower up a notch. (Or ask your mowers to raise their machine’s height.)

In extreme cases of yellow grass, you may need to re-seed or re-sod your lawn.

How to help prevent a yellow lawn

To avoid yellowing grass, you can practice several healthy lawn habits.

  • Use dirt or sand to fill in your lawn’s low areas, where water can accumulate and breed disease. This way you can make sure your lawn is level.
  • Improve lawn drainage with help from a professional landscaping company.
  • Grow the proper turf grass for your region or climate.
  • Check your soil for deficiencies, and add fertilizer or nutrients to enrich your soil.
  • Always mow at the correct height for your grass.
  • Mow with sharp blades and only mow when grass is dry.
  • Have your lawn core aerated. Aeration will loosen the soil and lets more oxygen, nutrients, and water reach your grassroots.

Need help with any of these techniques? Want to have professionals caring for your lawn? Then call Emerald Lawns today at 512-990-2199 or request a free estimate today. We can control weeds and diseases, keeping your grass always greener.