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Active Lawn Liquid Lawn Fertilizer (42.3 fl oz)

42.3 fl. oz. covers up to 5,000 sq. ft.

LAWN PLAN EXCLUSIVE

Active Lawn

High nitrogen for high-traffic lawns.

28-0-3 liquid lawn fertilizer with nitrogen and potassium for growth and deep green color. Built for actively used lawns that need strong, steady feeding.

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LAWN PLAN EXCLUSIVE

Active Lawn

Nutrients for actively used lawns

Active Lawn delivers 28-0-3 for lawns that get used hard. High nitrogen fuels dense growth to recover from wear. Potassium strengthens roots so grass bounces back. The 5.6% slow-release keeps feeding steadily instead of surging and crashing.

Not for new lawns or stressed grass. This is fuel for lawns already running.

The good stuff inside

  • High nitrogen 28-0-3 NPK Fuels dense growth on high-traffic lawns
  • 5.6% slow-release nitrogen Keeps feeding for weeks, not days
  • Potassium Strengthens roots so grass bounces back
  • Zero pesticide fertilizer—everything you need, nothing you don't
  • Universally loved by climates and grasses

How to use

Apply spring or summer when grass is actively growing. Temps 50-85°F.

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. Let dry completely before walking on lawn.

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

What does Active Lawn do?

Active Lawn delivers high nitrogen (28-0-3) for dense growth and deep green color. The 5.6% slow-release nitrogen keeps feeding steadily instead of a one-week surge that fades. Potassium strengthens roots for stress resilience. It's built for lawns that get heavy use and need to recover from wear.

How long after Active Lawn can I apply my next fertilizer?

Wait 4-6 weeks between liquid fertilizer applications. Applying sooner risks burning your lawn with excess nitrogen. If you're using granular fertilizer, your wait time in between applications can be found on the product label (each one is slightly different). Mark your calendar so you don't stack applications.

Can I use Active Lawn right after aeration?

Yes. Aeration opens channels for nutrients to reach roots. Apply Active Lawn within a few days of aerating for best results. The nitrogen will move into the soil through the aeration holes. Water lightly after application.

How long after applying Active Lawn should I wait to mow?

Wait until the lawn is completely dry, usually 24 hours. Mowing wet grass after fertilizing can spread the product unevenly and stress the lawn. If you need to mow sooner, at least wait until the fertilizer has dried on the blades.

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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 10594 reviews!
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David
Verified Reviewer
LocationSparks, Nevada
I was skeptical, however seems

I was skeptical, however seems to be working. See before and after below.

Published date
10/10/25
Was this review helpful?
3
1
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
0
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
Was this review helpful?
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
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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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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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