Fertilizer burn can be an unintended consequence of making sure your lawn gets the nutrients it needs.

Have you put fertilizer on your yard and a few days later it goes brown? Over-fertilizing is one of the quickest ways to kill your lawn.

From general discoloration to those telltale stripes from overlapping spreader rows, excessive or careless fertilizing can cause quite a bit of damage to lawn grasses.

A brown patch of dead grass caused by fertilizer burn.
Overfertilizing or using the wrong fertilizer can cause dead patches of grass. (youngvet, Getty Images Signature)

About Fertilizer Burn in Grass

Chemical fertilizers are made up of mineral salts. When you over-fertilize, the salts build up in the soil and cause a drying effect, which can result in the grass turning yellow or brown. This process is called “fertilizer burn.”

Fertilizer burn isn’t always fatal, and it’s hard to predict whether or not your lawn will recover. It depends on the amount and type of fertilizer that was applied, the moisture available, and the overall health of the grass.

A slightly yellow lawn is likely to recover, while crispy brown grass may not. Recovery of your lawn also depends on how quickly you intervene.

A sprinkler head spraying water on a green yard
Keeping your grass healthy with the right amount of water it needs is always a major factor when fertilizing your yard. (nenovbrothers)

How To Treat Fertilizer Burn in Grass

If you have applied too much fertilizer to your lawn:

  • Remove Fertilizer: If you’ve spilled granular fertilizer or can see it on the ground, grab a broom or wet/dry vac and get up as much as you can before it dissolves into the lawn.
  • Apply Water: As soon as you notice a problem with fertilizer burn, drag out the sprinklers! Water helps to dilute and flush the mineral salts away from the roots of your lawn. On the first day, water until the ground can’t soak in any more. Then water every day for about the next week. Water in the morning to reduce the risk of fungal diseases.
  • Wait and See: At this point, there’s nothing you can do except wait and see if your lawn will recover from fertilizer burn. Unless it’s early spring with plenty of planting time left, wait until the next planting season rolls around (fall for cool-season grasses, spring for warm-season grasses) before replanting. Then, overseed thin spots and sow seed or sod in large dead areas. In the future, be sure to fertilize your lawn very carefully!

Rolling wheel barrow spreading granular fertilizer over a green lawn
Evenly spray fertilizer making sure not to overlay too much in one area to prevent over-fertilization. (groveb, Getty Images Signature)

How To Prevent Fertilizer Burn in Grass

To keep fertilizer burn from being a problem on your lawn, consider:

  • Use Organic Fertilizer: Use organic fertilizers and well-composted amendments. Organic fertilizers must be broken down by soil microbes according to nature’s timeline, which significantly reduces the chances of burning your lawn.
  • Follow Fertilizer Instructions: Always apply fertilizer exactly according to package instructions. Different fertilizers come in different strengths, and it’s important not to over-apply them to your lawn.
  • Reduce Lawn Stress: If the grass in your lawn is in poor condition, fertilize it very lightly to ease it back to health. Resist the urge to feed heavily, since weak grass is easily burned by chemical fertilizers. Don’t fertilize lawns that are severely stressed by drought, heat, or disease – it won’t be absorbed and can cause further damage.

Further Reading

Editorial Contributors
Danny Lipford

Danny Lipford


Danny Lipford is a home improvement expert and television personality who started his remodeling business, Lipford Construction, at the age of 21 in Mobile, Alabama. He gained national recognition as the host of the nationally syndicated television show, Today's Homeowner with Danny Lipford, which started as a small cable show in Mobile. Danny's expertise in home improvement has also led him to be a contributor to popular magazines and websites and the go-to source for advice on everything related to the home. He has made over 200 national television appearances and served as the home improvement expert for CBS's The Early Show and The Weather Channel for over a decade. Danny is also the founder of 3 Echoes Content Studio, TodaysHomeowner.com, and Checking In With Chelsea, a décor and lifestyle blog.

Learn More

Comments are closed.