What Does Nitrogen Do For Grass?

Give your grass a nitrogen boost

A house with lawn in its front yard
Photo: Peter Gridley / Stockbyte / Getty Images
A house with lawn in its front yard
Photo: Peter Gridley / Stockbyte / Getty Images
Highlights
  • Nitrogen is a nutrient that helps keep grass green and blades long and strong. 

  • You can find nitrogen in lawn fertilizer. 

  • It’s best to apply nitrogen to lawns in the spring, early summer, and early fall.

  • Signs of nitrogen deficiency include pale green grass, less growth, and more weeds. 

  • A regular schedule of fertilizer, watering, and mowing will produce best results.

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You may have heard of nitrogen in your high school chemistry class, and this nutrient is essential to more than the periodic table. It’s vital to growing thick, green grass, but what exactly does nitrogen do for grass?

Once applied to your soil, nitrogen helps maintain healthy growth and allows your lawn to withstand rough conditions throughout the season. Don’t hesitate to lean on a lawn fertilizing service for help determining the best timing for your lawn’s next feeding.

Angi Tip

When working with lawn fertilizer and other chemicals, take measures to prevent the products from contacting your skin and eyes. Be sure to wear protective gear like gloves and a dust mask to stay safe.

Kaitlyn Pacheco
Content Editor, Angi

What Is Nitrogen?

You can attribute what you associate with healthy grass—its vibrant green color, the length of its blades, and how thick it grows— to a healthy dose of nitrogen. This key nutrient is essential for grass to thrive, which is why it’s so important. Nitrogen is a nutrient that embeds in your soil to help grow grass or plants. Most fertilizers include this essential nutrient, and it assists in the production of chlorophyll, which makes grass green, as well as amino acids, which create the protein that helps grass alive.

What Are the Benefits of Using Nitrogen On Grass?

If you use nitrogen correctly, it can give your grass many advantages. The following benefits are often a result of adding nitrogen to your lawn:

  • It enhances the green color of your grass

  • It helps promote healthy root growth so grass can better withstand tough conditions. 

  • It supports the creation of enzymes and other proteins that help grass stay healthy and strong. 

  • It can boost grass growth and help speed up the formation of new blades. 

  • It improves the health of other plants growing in your yard.

When to Apply Nitrogen to Your Grass

What Are the Benefits of Using Nitrogen On Grass?
Photo: LeviaUA / Adobe Stock

They say timing is everything, which is also true for lawn fertilizer treatment. The best time to apply nitrogen to your grass is early to late spring, early summer, and early fall. You want to add nitrogen to your grass when temperatures and conditions aren’t extreme, so spring, early summer, and fall are the optimal seasons.

For best results, perform a soil test to determine how much nitrogen your lawn needs before heading to your lawncare or hardware store for fertilizer. Then, once applied, it’s best to keep a regular lawn maintenance schedule of mowing, watering, and fertilizing to maintain results.

When working with lawn fertilizer and other chemicals, take measures to prevent the products from contacting your skin and eyes. Be sure to wear protective gear like gloves and a dust mask to stay safe.

Signs Your Lawn is Nitrogen Deficient

The good news is that if your lawn is lacking in nitrogen, it will tell you through one or more of the following signs:

  • Grass is lighter in color, likely as a result of a decrease in photosynthesis

  • Slower recovery from regular foot traffic 

  • Decrease in plant growth 

  • Increase in weed growth or bare patches on your lawn 

  • Puddles of runoff water that take a long time to disappear 

If the color of your grass starts fading to light green or yellow, becomes more susceptible to brown patches or diseases, and starts to thin out, your lawn would likely benefit from additional fertilizer to get your grass back in peak condition. If you’ve tried to add nitrogen without success, a lawn fertilizing service near you can take a look at your yard and provide a treatment plan catered to your specific needs.

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