25% off lawn plans

Code: EARTH

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.

sunday-guarantee-badge

We're committed to making sure Sunday works for you and your home. Need a replacement? Or help troubleshooting an issue? Our experts are here for you. Learn more

Related products

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.

Trending items

New

Bug doom (indoor & outdoor) and ant adios Bug doom (indoor & outdoor) and ant adios

Sunday Ultimate Ant Kit

$100 $112

Shipping box

Free Shipping!

Freedom Blackberry Bush CloseupFreedom Blackberry Bush Closeup

Freedom Blackberry Bush

$55

Shipping box

Free Shipping!

Gilmour 5-Pattern Swivel WandGilmour 5-Pattern Swivel Wand

Gilmour 5-Pattern Swivel Wand

$19

Shipping box

Free Shipping!

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 10593 reviews!
Popular topics
Show more
Michael S.
Verified Reviewer
LocationPA
Great. Magnificent

I was very skeptical of using this product. I am shocked and surprised how well Sunday did for my lawn. After many times of making my lawn look good. There are no words to express how well my lawn looks. This year

Published date
04/23/26
Was this review helpful?
0
0
Fredy
Verified Reviewer
LocationIndiana
Not happy with results.

Not happy with the results with the Weed & Green pre-emergent. New Weeds all over my lawn. Would not purchase again.

Published date
04/11/26
Was this review helpful?
9
1
Ryan
Verified Reviewer
LocationColorado
Full solution lawn care

I have been a Sunday user for a number of years and am thrilled at the transformation my lawn has made (before and after photos about a year into my Sunday subscription attached). The products ship straight to my door and the instructions and application dates are clear. Customer service and their v...

Comments by Store Owner on Review by Sunday on Sat Apr 11 2026
Sunday
Hello Ryan! We are delighted to hear about the amazing results you have achieved with Sunday products. We look forward to being your partner on this lawn care journey for many more years to come!
Published date
04/09/26
Was this review helpful?
0
0
Nicole
Verified Reviewer
LocationCO
We grew back grass in time for our wedding

We planned a post-wedding party for our backyard last year. Couldn't imagine we'd be able to grow grass in time. Sunday not only helped us grow back our lawn but our dog was sooo happy too. Cannot recommend the custom plan plus dog lawn grass seed and lawn aid enough.

Comments by Store Owner on Review by Sunday on Sat Apr 11 2026
Sunday
Hi Nicole! We are thrilled to hear that our custom plan and dog lawn grass seed worked wonders for your backyard party. We look forward to helping you with all your lawn needs in the future!
Published date
04/09/26
Was this review helpful?
0
0
Mike S.
Verified Reviewer
LocationCO
Impressive.

Very impressed so far! I used the weed and green pre emergent (***www.getsunday.***/shop/lawn-care/weed-green-pre-emergent-and-post-emergent-weed-killer-2-pack) was shocked to see how quickly it started working without all the harsh chemicals! My dog was back on the lawn within 24 hours. So far so g...

Published date
04/06/26
Was this review helpful?
0
0
John
Verified Reviewer
LocationColorado
Green grass without a lame new hobby

Came across Sunday on advice from a friend. I'd always wanted to be one of those people with lush green grass but wasn't looking for another hobby to take my time and money. Sunday fits the bill: just tell me what to do and when to do it. My lawn is now up there with the best on the street and I get...

Published date
03/25/26
Was this review helpful?
3
1
David L.
Verified Reviewer
LocationCO
Love how easy Sunday is

Wow—Sunday really made my lawn look so much better. Lawn is thick and very green. It’s super easy to use, and I’ve been really happy with the subscription.

Published date
03/25/26
Was this review helpful?
0
0
Larry
Verified Reviewer
LocationColorado
Three years in

Three years in and our lawn is beautiful. So much easier than everything I tired before. The tree fertilizer also did wonders for my cherry tree.

Published date
03/25/26
Was this review helpful?
0
0
Mike P.
Verified Reviewer
Thick Lawn grown in 85 % Sand !

We never could get grass to grow on our southwest front hill and our grass up front was always thin ! The back yard was always patchy and grass would never grow behind our pool ! We started using Sunday roughly 4 years ago and Wow ! nice thick lawn up front and a full lawn out back and in 85% sand t...

Published date
01/25/26
Was this review helpful?
8
1
Chris
Verified Reviewer
LocationVan Nuys, CA.
Great Results

I followed the recommended steps. After the first seeding, the ground was unreceptive so I added some topper cover/fertilizer. Aside from that, all the recommended steps have led to a beautiful lawn.

Published date
01/11/26
Was this review helpful?
1
1

Related Products