- What is Fertilizer Burn?<\/a><\/li>
- How Does Fertilizer Burn Happen?<\/a><\/li>
- Signs and Symptoms of Fertilizer Burn<\/a><\/li>
- Differences Between Fertilizer Burn and Other Lawn Problems<\/a><\/li>
- Causes of Fertilizer Burn<\/a><\/li>
- Types of Grass Most Susceptible to Fertilizer Burn<\/a><\/li>
- FAQ About Fertilizer Burn<\/a><\/li><\/ul> \t\t\t<\/div> \t\t<\/div><\/div>
What is Fertilizer Burn?<\/h2>
Fertilizer burn is a type of drought stress.<\/strong> This burning happens when too much fertilizer is added to your lawn or garden, causing discolored streaks on blades of grass, patches of \u201cscorched\u201d yellow or brown grass, or a lack of grass growth.<\/p>
As a lawn care do-it-yourselfer, you may be tempted to apply extra fertilizer for good measure. But when it comes to fertilizers, too much of a good thing can give you the opposite result. Excess fertilizer can:<\/p>
- Kill your grass<\/li>
- Contaminate nearby waterways<\/li>
- Harm wildlife<\/li>
- Disrupt soil microbial growth<\/li> <\/ul>
Pro Tip:<\/strong> To avoid fertilizer burn, hire a local lawn treatment pro<\/a> to fertilize at the ideal rate at the right times throughout the year.<\/p>
How Does Fertilizer Burn Happen?<\/h2>
Fertilizer burn happens when too much salt builds up in the soil.<\/strong> Here\u2019s why: Synthetic fertilizer components (nitrogen, phosphorus, and potassium) are salts that allow for a quick release and uptake of nutrients for your lawn or plants.\u00a0<\/p>
This quick-release can provide your lawn with a fast influx of helpful nutrition, which can be a good thing. However, an excessive concentration of these salts in the soil (such as after a fertilizer spill) is detrimental.<\/p>
In high amounts, these salts draw out too much water from the grass. As a result, the grass dries up, leaving brownish patches of burned or dead grass throughout your lawn.<\/p>
Signs and Symptoms of Fertilizer Burn<\/h2>
![\"bald](\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2022\/01\/rsz_1grass-g1491050d2_1280.jpg?wsr\")
Photo Credit: Pixabay<\/a><\/figcaption><\/figure> After you fertilize your lawn, look for these signs of fertilizer burn:<\/p>
- Discoloration<\/strong> on grass blades<\/li>
- Patches where the grass stops growing<\/strong>\u00a0<\/li>
- Patches of burned grass<\/strong> OR<\/li>
- Burned grass in the form of a square<\/strong> or<\/strong> strands of burned grass in a checkerboard shape<\/strong>. This is usually caused by too much overlap as you apply the fertilizer.<\/li> <\/ul>
Differences Between Fertilizer Burn and Other Lawn Problems<\/h2>
Some of these signs are also signs of lawn diseases, pesticide or herbicide damage, dryness, or maybe your pet has been peeing in that spot. Here\u2019s how can you tell the difference between a fertilizer burn and other lawn problems:<\/p>
- With fertilizer burn, the grass will typically be crispy or crunchy<\/strong> to the touch.\u00a0<\/li>
- You might also see root rot and impaired growth<\/strong>.\u00a0<\/li>
- You might notice a salt \u201ccrust\u201d on top of the soil<\/strong>.<\/li> <\/ul>
Causes of Fertilizer Burn<\/h2>
![\"illustration](\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2025\/03\/organic-vs-synthetic-fertilizer-1.jpg?wsr\")
Infographic by Juan Rodriguez <\/figcaption><\/figure> So you\u2019ve got fertilizer burn. But what might’ve caused it? Here are the most common causes of fertilizer burn:<\/p>
- Excessive fertilizer application<\/strong>. If you\u2019re not applying the recommended amount on the label or you miscalculate the size of the area, you risk burning your lawn.<\/li>
- Applying fertilizer under dry, hot conditions<\/strong>. Fertilizing a heat-stressed lawn or excessively dry turf can further damage the grass instead of helping it. Wait until weather conditions normalize and your grass recovers from stress before fertilizing. (Learn When to Fertilize Your Lawn<\/a> in our article.)<\/li>
- Using <\/strong>quick-release fertilizer<\/a> instead of slow-release fertilizer<\/a>. <\/li>
- Using a product with the wrong NPK ratio<\/strong> for your soil can also cause burns. Conduct a soil test<\/a> annually.<\/li>
- Leaving fertilizer granules on grass blades.<\/strong> Water the lawn immediately after spreading the granules to dissolve them.<\/li>
- Leaving the hopper open<\/strong>. When using a fertilizer spreader<\/a>, close the hopper every time you need to turn, stop, or refill.<\/li> <\/ul>
See Related:<\/strong><\/p>
- How to Fix an Over-Fertilized Lawn<\/a><\/li>
- How Do You Know You Over-Fertilized Your Lawn?<\/a><\/li>
- Fertilizer Numbers: Why They Matter and What They Mean<\/a><\/li>
- How Much Does Lawn Fertilization Cost?<\/a><\/li> <\/ul>
Types of Grass Most Susceptible to Fertilizer Burn<\/h2>
![\"closeup](\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2023\/03\/Centipede-Grass.jpg?wsr\")
Photo Credit: James Becwar<\/a> \/ Wikimedia Commons \/ CC0<\/a><\/figcaption><\/figure> Any turfgrass is susceptible to fertilizer burn, especially during drought, if the soil salinity is high, or if you apply the product incorrectly. However, you can expect varieties and cultivars that have fine-textured grass blades or shallow roots to be more sensitive to fertilizers and burn more easily:<\/p>
- Perennial ryegrass<\/a><\/li>
- Kentucky Bluegrass<\/a><\/li>
- Centipedegrass<\/a><\/li>
- Bentgrass<\/a><\/li> <\/ul>
FAQ About Fertilizer Burn<\/h2>
How Long Does it Take Your Lawn to Bounce Back From Fertilizer Burn?<\/strong>The time it takes for your lawn to recover from fertilizer burn depends on the degree of the damage. Depending on the severity of the burn, the grass can take from 1 week to 1 month to recover. Or, if it has died, you\u2019ll need to remove the grass<\/a> and plant grass seed<\/a> or lay sod<\/a>.
Can Organic Fertilizers Cause Fertilizer Burn?<\/strong>Yes, although the chances are reduced, organic fertilizers<\/a> can still burn your lawn or plants if you apply too much or apply improperly.\u00a0
How Can You Avoid Fertilizer Burn?<\/strong>You can prevent fertilizer burn by never fertilizing a stressed lawn, fertilizing only when the grass is dry, and following the product label closely. Additionally, choose the right lawn spreader<\/a> for your yard and avoid overlapping when spreading the fertilizer.
Hire a Lawn Treatment Pro Near You<\/h2>
If you\u2019re worried about dealing with a burned lawn alone, entrust your lawn to a local lawn treatment pro<\/a>. A trusted pro can treat your burned areas and even make future fertilizer applications for you. Get a quote today.<\/p>
\t\t\t\t\t\tSources:<\/strong><\/p> \t\t\t
<\/span><\/div> \t\t<\/div> \t\t\t- \u201cFertilizer Application, Don\u2019t Get Burned<\/a>.\u201d By John Orick, Purdue master gardener state coordinator. Purdue University.<\/li>
- \u201cFertilizer or Pesticide Burn on Vegetable Leaves<\/a>.\u201d University of Maryland Extension.<\/li>
- \u201cFertilizer Salt Index<\/a>.\u201d A & L Canada Laboratories.<\/li> <\/ul> <\/div> \t\t<\/div> <\/div>
- \u201cFertilizer or Pesticide Burn on Vegetable Leaves<\/a>.\u201d University of Maryland Extension.<\/li>
- Kentucky Bluegrass<\/a><\/li>
- How Do You Know You Over-Fertilized Your Lawn?<\/a><\/li>
- Applying fertilizer under dry, hot conditions<\/strong>. Fertilizing a heat-stressed lawn or excessively dry turf can further damage the grass instead of helping it. Wait until weather conditions normalize and your grass recovers from stress before fertilizing. (Learn When to Fertilize Your Lawn<\/a> in our article.)<\/li>
- You might also see root rot and impaired growth<\/strong>.\u00a0<\/li>
- Patches where the grass stops growing<\/strong>\u00a0<\/li>
- Discoloration<\/strong> on grass blades<\/li>
- How Does Fertilizer Burn Happen?<\/a><\/li>