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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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Sunday liquid lawn fertilizer pouches side by side on a lawn

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 10591 reviews!
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Becky
Verified Reviewer
LocationSpokane, WA
Finally!!!

It is an immense relief to find a yard care option that works with nature not against it. No more green short term facade, with poisoning long term destruction. And it's actually fairly affordable?!?!?! Wow. Mindblown. Thank you very much.

Published date
10/09/25
Was this review helpful?
1
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Greg
Verified Reviewer
So far so good can’t

So far so good can’t wait for next season to see how everything is holding up? Time will tell.

Published date
10/09/25
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1
0
Matt
Verified Reviewer
LocationBlauvelt, New York
Plan is great. Customer support us even better

I started with a weed infested lawn. I had tons of questions and the guys were more than helpful with their responses. Will even went as far as making video responses to a video I sent showing my lawn's status. Super happy with the service.

Published date
10/09/25
Was this review helpful?
3
1
Ronald
Verified Reviewer
LocationMartinsville Indiana
Finally Making Some Progress with my Yard!!

This is my first year using the Sunday System. I have unsuccessfully tried the DIY yard treatment granules from the big box stores and tried hiring a truly green service to apply for me, but no success with either. From the pictures, you can see that for the first time in ten years, I am finally mak...

Published date
10/08/25
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0
0
Jeff
Verified Reviewer
LocationFallon, Nevada
Sunday is dialed in to your needs 100%

My lawn was close to impossible to improve, let alone maintain. Huge patchy areas, tons of weeds, always dry looking despite the constant watering; nothing was helpful from the store bought products. I decided to try Sunday, in June. Sent my soil sample in started using the plan sent fertilizers im...

Published date
10/08/25
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0
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Melissa
Verified Reviewer
LocationSpokane, WA
Sunday lawn service is great !!

I started using Sunday at the beginning of the summer and my yard is a lawn now. It's beautiful. And very very thick!!

Published date
10/08/25
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0
0
Erin
Verified Reviewer
LocationMonroe, WA
Such an easy to follow system!

I love that the products just show up, I don't have to mark dates on my calendar or research what I'm supposed to be doing now. Getting the emails telling me which product to use now; and having Sunny to ask questions has been a game changer. I have been following the plan for about 6 months now and...

Published date
10/08/25
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0
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Sean
Verified Reviewer
LocationPittston, PA
First Season

We live in a wooded area where I am always fighting to get the grass to grow between the board of the yard and the forest. The fertilizer I received in my first box I feel made a difference with the existing grass we already had. With our new puppy I did utilize the urine resistance seed to get the ...

Published date
10/08/25
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1
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Donna
Verified Reviewer
LocationGrayson county Texas
Healthiest on the Block

I do love using Sunday products on my too large lawn! I found them to be economical too compared to the dry fertilizers that never spread as far as they promise

Published date
10/08/25
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0
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Bobby-Jean
Verified Reviewer
LocationWilliamsburg, VA
So Far, So Good!

So far Sunday’s products is helping me keep my lawn rehab on track heading into Fall season. The application and customer support has been on point also. Looking forward to seeing the Spring season results!

Comments by Store Owner on Review by Sunday on Wed Oct 08 2025
Sunday
Hi Bobby-jean! We're delighted to hear that Sunday's products are keeping your lawn rehab on track. We can't wait to see the results in the Spring season! Thank you for choosing us.
Published date
10/08/25
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