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.

Shop custom plans

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

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.

Read article

Customer reviews

Reviews with media

Slide 5 of 34. Image of customer.

Popular topics

instructions

size

color

smell

support

materials

quality

pictures

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?

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?

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?

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?

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?

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?

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

Was this review helpful?

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...

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

Was this review helpful?

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?

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

Was this review helpful?

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?

Trending items

Liquid Lawn Fertilizer Instructions

Customer reviews

Related Products