Nitrogen Fertilizer for Grass

Nitrogen Fertilizer for Grass

Low and high nitrogen fertilizer for grass including options and when to use on your lawn.

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A white bag of Lawn Synergy Starter 15-20-10 professional lawn fertilizer with green geometric accents and branding.

RECOMMENED NOW

Emerald 10-0-20

Tall Fescue, Kentucky Bluegrass, Zoysia, St. Augustine, and Centipede Lawns.
A white bag of Lawn Synergy Starter 15-20-10 professional lawn fertilizer with green geometric accents and branding.

RECOMMENED NOW

Almighty 20-0-10

Bermuda Lawns & Lawns needing more nitrogen.
A white bag of Lawn Synergy Starter 15-20-10 professional lawn fertilizer with green geometric accents and branding.

Seeding or Sod

Starter Fertilizer

The Key to Faster Germination & Stronger Roots

Organics Option

BioBoost

Build up organics within the soil while also feeding the lawn.

Measure Your Lawn

Order the correct amout of product based on the sq ft of your lawn.

Spreader Settings

Common spreader settings for various lawn products.
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Lawn Fertilizer

Feed your lawn for season-long results.

Grass Seed

Clean weed-free seed for a ultra-dark green lawn.

Weed Control

Clean up pesky weeds that don't belong in your lawn.

Fungicide

Prevent and cure disease in your lawn and ornamentals.

Insecticide

Don't let insects destroy your lawn. Treat ticks mosquitos, and more.

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Tall Fescue

Bermuda

Zoysia

St. Augustine

Centipede

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How It Works

Choose Your Lawn
1

Choose Your Lawn

Tell us your lawn type and goals.

Get Your Program
2

Get Your Program

We recommend the right products and timing.

Apply With Confidence
3

Apply With Confidence

Simple steps for a thicker, greener lawn.

Choose Your Lawn
1

Choose Your Lawn

Tell us your lawn type and goals.

Get Your Program
2

Get Your Program

We recommend the right products and timing.

Apply With Confidence
3

Apply With Confidence

Simple steps for a thicker, greener lawn.

Welcome to our specialized collection of nitrogen fertilizers for grass, meticulously crafted to cater to the diverse needs of your lawn. Our range is thoughtfully divided into two primary categories, ensuring that you find the perfect match for your turf's specific requirements.

Low Nitrogen Fertilizer

Ideal for maintenance and balanced growth, our low nitrogen lawn fertilizers are formulated to gently nourish your grass. Perfect for established lawns, these fertilizers provide enough nitrogen to maintain health and color without excessive growth. Explore our selection to keep your lawn vibrant and sustainable.

Emerald 10-0-20 Lawn Fertilizer - Contains 10% nitrogen that is 50% slow-release for slow and continuous growth.  It's spiked with iron and micros for additional dark green color and health.

  • Centipede lawns
  • Tall Fescue Lawns (May - August)
  • Zoysia Lawns (May - August)
  • St. Augustine Lawns (May - August)
  • Kentucky Blue/Rye Lawns - (May - August)

Organic Lawn Fertilizer 5-3-0 BioBoost - Only containing 5% nitrogen that is all slow-release makes this a fantastic organic fertilizer.  By utilizing 100% organics, this is a no-burn fertilizer that greatly helps build up nutrient deficient soils.  Great for new homes where topsoil is minimal.  Also increases CEC level in soil.

  • Can be used on all lawn types at anytime of the year for an additional boost of organics and nutrition.
  • Recommended for increasing CEC's and organic matter in soil
  • Gives your lawn that dark green color

0-0-4 Nutrigreen Lawn Fertilizer - Does not contain any nitrogen, but contains micro nutrients including iron for dark green color and also treats lawns during nitrogen blackout restrictions.  Now contains Balaynce-D as a blend of microbes, archaea, enzymes, amino acids, biostimulants, and microbial food sources designed to support soil and plant-friendly microbial populations.

  • Centipede lawns (Anytime or in between 10-0-20)
  • Tall Fescue Lawns (July - August)
  • Zoysia Lawns (May - August)
  • St. Augustine Lawns (Anytime)
  • Kentucky Blue/Rye Lawns - (July - August)

High Nitrogen Fertilizer

For lawns needing a boost in growth and greenness, our high nitrogen fertilizers are the go-to solution. These formulations are designed to invigorate and rejuvenate, ideal for new lawns or repairing damaged turf. The high nitrogen content ensures rapid green-up and thick, lush growth. 

Almighty 20-0-10 Lawn Fertilizer - Contains 20% nitrogen that is 40% slow-release providing a nice even growth.

  • Tall Fescue Lawns (September - December)
  • Bermuda Lawns (May - September)
  • Zoysia Lawns ( May - September)
  • Kentucky Blue/Rye Lawns - (Anytime)
  • St. Augustine Lawns (Anytime - Between applications of 10-0-20)
  • Centipede - (Do not use on centipede lawns)

Starter Lawn Fertilizer 15-20-10 - Contains 15% Nitrogen that is 20%slow-release for a constant feeding when germinating seedlings or also for malnourished lawns needing additional nutrients.

46-0-0 Sprayable Urea Fertilizer - Contains 46% Nitrogen that is fast and ready to grow. Small pearl size makes it easier to dissolve into water for a sprayable solution.  This is our highest nitrogen fertilizer.

Each product within these categories is carefully selected to offer the best in lawn care, whether you're maintaining a healthy lawn or aiming for dramatic improvements. Trust our nitrogen fertilizers to bring out the best in your grass.

Current Best Sellers

Headway G Fungicide 30 lb. Bag

Headway G Fungicide

$78.95

Prevent and cure disease
Emerald 10-0-20 Lawn fertilizer with iron

Emerald 10-0-20 Lawn Fertilizer

$39.99

Low nitrogen stress blend
Almighty 20-0-10 Lawn Fertilizer

Almighty 20-0-10 Lawn Fertilizer

$39.99

High nitrogen for growth
bifen 7.9F pint

Bifen 7.9F Insecticide

$29.95

Treats insects and mosquitos
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Got Questions?

Frequently Asked.

What is the best source of nitrogen for lawns?

There are many different types of Nitrogen. The best source of nitrogen for your lawn is a blend of nitrogen sources. At lawnsynergy, we blend different sources of nitrogen into each bag so that your lawn is continuously fed. Cheap fertilizers only contain urea. Our fertilizers contain polymer-coated urea, ammoniacal, and bio-solids. By combining multiple nitrogen sources, you are sure to receive a lush lawn.

What is the best fertilizer for grass root growth?

15-20-12 Starter Lawn Fertilizer is the best fertilizer to use when trying to increase root development typically at seeding. Additional phosphorous enhances and encourages root development, and with our blended nitrogen sources, your grass seed will germinate and develop faster.

What is the best fertilizer for grass in summer?

It depends on your lawn type. Warm season lawns such as bermuda grass and zoysia grass greatly benefit from higher nitrogen fertilizer such as 20-0-10.
Cool season grasses benefit from lower nitrogen fertilizers during the summer months such as our 10-0-20.

How do I increase nitrogen in my lawn?

By simply applying lawnsynergy's 20-0-10 lawn fertilizer. 20-0-10 is a perfect blend of slow-release nitrogen for continuous feeding, and 10% potassium for strength and stress.

Apply fertilizer every 6-8 weeks for a nice dark green lawn.

Will too much nitrogen burn your grass?

Yes, it can. But a large amount of fertilizer must be applied for burn to occur. If you follow the label and apply the fertilizer at the correct time, and apply the correct amount, there is no reason to worry about burn.

Always water in your fertilizer application to begin activation.

Burn can occur if fertilizer is spilled in one area when applying. Be sure to begin pushing the spreader before opening the latch.