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Super Nitrogen Liquid Lawn Fertilizer (42.3 fl oz)

One pouch covers up to 5,000 sq ft

LAWN PLAN EXCLUSIVE

Pouch of Super Nitrogen

Our highest nitrogen. Ever.

30-0-0 liquid fertilizer with maximum nitrogen and zinc for dense, green growth. Built for heavily used lawns, large properties, and southern grass types.

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LAWN PLAN EXCLUSIVE

Pouch of Super Nitrogen

Maximum nitrogen for lawns that need it

Super Nitrogen is exactly what it sounds like. Our highest nitrogen formula at 30-0-0, built for lawns that burn through nutrients fast. High-traffic yards, large properties, warm-season grasses that grow aggressively in summer. Zinc helps the plant process all that nitrogen efficiently and reduces burn risk.

This isn't for every lawn. It's for lawns that eat fertilizer for breakfast.

The good stuff inside

  • Maximum nitrogen 30-0-0 NPK Our highest dose for lawns that need it
  • 5.8% slow-release nitrogen Reduces burn risk, extends feeding
  • Zinc Helps grass process high nitrogen efficiently
  • Zero pesticide fertilizer—everything you need, nothing you don't
  • Universally loved by climates and grasses

How to use

Apply during the growing season when grass is established. Avoid applying to new lawns or stressed grass.

1. Apply early morning or evening to a well-hydrated lawn.

2. Connect sprayer to hose and pouch.

3. Spray evenly until pouch is empty (about 10-15 minutes).

4. Reapply every 4-6 weeks during active growth.

When should I use Super Nitrogen instead of Active Lawn or Mighty Green?

When your lawn needs maximum feeding. Large properties where standard formulas don't keep up, bermudagrass that grows aggressively in summer, or high-traffic areas that need constant recovery. Super Nitrogen delivers 30% nitrogen versus 26-28% in other formulas. If your lawn looks hungry two weeks after fertilizing, this delivers more fuel.

Can too much nitrogen damage my lawn?

Yes. Over-fertilizing causes excessive top growth at the expense of roots, increases disease susceptibility, and can burn grass. Super Nitrogen includes 5.8% slow-release and zinc to reduce burn risk, but follow application rates. Don't apply more often than every 4-6 weeks.

What does zinc do in Super Nitrogen?

Zinc helps grass process nitrogen efficiently. Without enough zinc, nitrogen builds up faster than the plant can use it, increasing burn risk. The zinc in Super Nitrogen supports healthy uptake so you get the benefits of high nitrogen without the downside.

Is Super Nitrogen safe for all grass types?

For established lawns, yes. Bermudagrass, St. Augustine, and other warm-season grasses handle high nitrogen well. Fine fescue prefers less. Kentucky bluegrass tolerates it. Know your grass type before applying. And avoid new seedlings—they need phosphorus, not heavy nitrogen.

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Liquid Lawn Fertilizer Instructions

Healthy soil grows healthy grass. Sunday's liquid fertilizers deliver nutrients fast, right when your lawn needs it. Here's how to put them to work.

Read article

Customer reviews

Based on 10593 reviews!
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Melia
Verified Reviewer
LocationSandy, UT
Thank you!!

Thank you for a clean product that works!!! I feel so much better spraying this in our yard instead of spreading toxins. . . dogs, cats, birds and squirrels all say thank you too! Our grass looks great too - I asked my husband what he thought and he just replied, 'have you looked at the grass? - it ...

Published date
12/29/25
Was this review helpful?
3
1
Scott
Verified Reviewer
LocationHuntersville, NC
Amazing!

Sunday and all of the plans and services that are offered cannot be beat. You have a question, they have an answer. You’re not sure about something, just ask and Sunday is there. Thank you for having a wonderful yard to be so simple.

Published date
11/07/25
Was this review helpful?
6
1
Kevin
Verified Reviewer
LocationBrandon, MS
Wonderful Lawncare

I started using Sunday this year and I love it so far! Great products that aren't full of harmful chemicals and they work! My lawn loves the fertilizer and doesn't hate the weed killer or bug spray, both of which work really well. The soil analysis was cool to see, and so far the AI chat Sunny has...

Published date
10/22/25
Was this review helpful?
3
1
Bob
Verified Reviewer
LocationMedina, Ohio
Best Lawn In The Neighborhood

Was not sure about this system but by following the Sunday directions, other some pesky clover, I have the best looking lawn in our subdivision.

Published date
10/17/25
Was this review helpful?
4
1
David
Verified Reviewer
LocationOhio
Huge improvement!

It has taken a little while, but my yard is much better after Sunday treatments.

Published date
10/17/25
Was this review helpful?
5
2
Randall
Verified Reviewer
LocationRinggold GA
I’m very pleased so far

I started Sunday treatments in August of this year and am pleased with the results. I love the ease of transactions as Sunday sends my tools as they are needed and I have a schedule that tells me when to apply. No guess work. I also love the Sunny feature and have used it a few times. It is very hel...

Published date
10/16/25
Was this review helpful?
5
2
Therese
Verified Reviewer
LocationSouthwest Ohio
Working on it

I started the Sunday program in August. My yard hadn’t been fertilized since last autumn and isn’t in the best shape. After 4 applications of fertilizer it looks better but it isn’t where we want it. I just can’t seem to get the weeds out. I like the reminders to fertilize the lawn. I’m going to giv...

Published date
10/15/25
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6
2
Michael
Verified Reviewer
LocationIdaho
Idaho comeback

My yard was in need of getting greener and weeds removal. Sunday excelled at the getting greener part! The weeding product really didn't work especially the one for "garden" which ended up burning and destroying several of my flowers in bed around garden (it was supposed to be safe for flowers and g...

Comments by Store Owner on Review by Sunday on Wed Oct 15 2025
Sunday
Hello Michael, we apologize for the inconvenience caused by the weeding product and our team would love to take a look at your Sunday account and help locate your soil test results. Please reach out to [email protected] or 415-903-6932 for further assistance.
Published date
10/14/25
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4
2
Erick
Verified Reviewer
LocationGreenville, SC
Beautiful Lawn!

Sunday profucts have made my lawn so full and green. Great products, easy to apply amd great results!

Published date
10/12/25
Was this review helpful?
2
1
Nanette
Verified Reviewer
LocationBlack Hills, SD
Beautiful backyard!

First year with Sunday Lawn. I started with them in August I believe? I am a widow who loves my backyard, 2 dogs and cat, and wanted a non- chemical lawn. This product really feeds and nourishes my lawn! I water on a schedule which is important too. I used to use Trugreen but decided to do it myself...

Published date
10/11/25
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2
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