Mighty Green Liquid Lawn Fertilizer (42.3 fl oz)

Name: Mighty Green Liquid Lawn Fertilizer (42.3 fl oz)
Brand: Sunday
SKU: SBA3078
Price: 25.00 USD
Availability: InStock
Rating: 4.3 (10593 reviews)

One pouch covers up to 5,000 sq ft

10593 reviews

LAWN PLAN EXCLUSIVE

Nutrients for a thick, green lawn.

26-0-2 liquid fertilizer with 10% slow-release nitrogen for steady growth and rich, lasting color. Feeds now and keeps feeding.

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Slow-release nitrogen for color that lasts

Mighty Green delivers 26-0-2 with high nitrogen for dense growth and potassium for resilience. The difference is the 10% slow-release nitrogen. Instead of a quick surge that fades in two weeks, it keeps feeding so color holds longer between applications.

Deep rooting. Deep greening. And it sticks around.

The good stuff inside

High nitrogen 26-0-2 NPK Dense growth and deep greening
10% slow-release nitrogen Color that lasts between applications
Potassium Deep rooting and heat tolerance
Zero pesticide fertilizer—everything you need, nothing you don't
Universally loved by climates and grasses

How to use

Apply spring through fall 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.

FAQ

How long after applying Mighty Green should I see a difference?

Most lawns show visible greening within 5-7 days. The quick-release nitrogen works fast. The 10% slow-release continues feeding for weeks, so color should hold longer than fertilizers without slow-release. Full results depend on watering and weather.

Should I water my lawn after applying Mighty Green?

Wait 24 hours before watering or running sprinklers. The fertilizer needs time to dry and absorb. If rain is expected within 3 hours, wait for a drier day. Light rain after 24 hours is fine and helps move nutrients into soil.

How long do I wait to apply Mighty Green after seeding?

Wait until new grass has been mowed 2-3 times, usually 4-6 weeks after germination. Applying Mighty Green too early can burn tender seedlings.

Can I apply Mighty Green before or after aerating?

Either works. Applying after aeration lets nutrients reach roots through the holes. Applying before is fine too. Just don't aerate immediately after applying or you'll disrupt the fertilizer before it absorbs. Wait 2-3 days between application and aeration.

Documents

Mighty Green SDS

Mighty Green Label

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.

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Customer 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

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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

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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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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

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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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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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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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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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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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Shop custom plans

Mighty Green Liquid Lawn Fertilizer (42.3 fl oz)

Slow-release nitrogen for color that lasts

The good stuff inside

How to use

How long after applying Mighty Green should I see a difference?

Should I water my lawn after applying Mighty Green?

How long do I wait to apply Mighty Green after seeding?

Can I apply Mighty Green before or after aerating?

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Liquid Lawn Fertilizer Instructions

Customer reviews

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