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Grass Powerhouse Liquid Fertilizer (2-pack)

$54 $60

(2) 42.3 fl. oz. pouch, covers up to 10,000 sq. ft.

Safe for kids. safe for pets.

Sunday Grass Powerhouse liquid lawn fertilizer 2-pack pouches with hose-end sprayer for fast green-upGrass Powerhouse pouch with hand holding itdata sheetdata sheetdata sheet

Lawn glow-up in one watering.

Fast-acting 24-0-3 liquid fertilizer that greens up your lawn, drives steady growth, and builds heat resilience. Zero pesticides. All grass types.

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$54$60

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Safe for kids. safe for pets.

Sunday Grass Powerhouse liquid lawn fertilizer 2-pack pouches with hose-end sprayer for fast green-upGrass Powerhouse pouch with hand holding itdata sheetdata sheetdata sheet

Your lawn's new favorite energy drink

Grass Powerhouse is a 24-0-3 liquid lawn fertilizer for fast, visible green-up. Nitrogen fuels thick growth, chelated iron dials up deep color, and seaweed extract with potassium keeps grass steady through summer heat. Attach the pouch to your hose and spray, no mixing needed. Results in 24 to 48 hours, way faster than granular.

What makes Grass Powerhouse Liquid Fertilizer (2-Pack) different

  • 24-0-3 NPK with the highest nitrogen in its class
  • Chelated iron for deep color, not just growth
  • Seaweed extract and potassium for heat resilience
  • Attach to hose and spray, no measuring needed
  • Zero pesticides, works on all grass types
  • Visible green-up in 24 to 48 hours

Ingredients

Nitrogen drives fast, dense grass growth and rapid green-up across your entire lawn.

Potassium strengthens water management and helps your lawn hold up through heat and drought.

Seaweed extract builds stress resilience so your grass stays steady when temperatures climb.

Iron delivers deep, rich greening without pushing excessive top growth.

How to use

For best results, apply early morning or evening between 50 and 85 degrees F. Make sure your lawn is well hydrated. Avoid use on drought-stressed or heat-stressed lawns.

  1. Connect the universal hose-end sprayer to your garden hose and attach the fertilizer pouch.
  2. Turn on the water and apply evenly across your lawn until the pouch is empty, about 10 to 15 minutes.
  3. Reapply every 4 to 6 weeks from spring through fall.
  4. Keep the sprayer for future applications.

How often should I apply Grass Powerhouse to my lawn?

Grass Powerhouse Liquid Fertilizer should be reapplied every 4 to 6 weeks from spring through fall while your grass is actively growing.

Apply when temperatures are between 50 and 85 degrees F. Skip applications during drought or when your lawn is heat-stressed.

How soon will I see results after applying Grass Powerhouse?

Grass Powerhouse Liquid Fertilizer delivers visible green-up within 24 to 48 hours of application. Full results typically appear within a week.

Your lawn responds fastest when it is already well hydrated and actively growing.

Is liquid fertilizer better than granular for my lawn?

Grass Powerhouse Liquid Fertilizer absorbs quickly through the leaf blade and delivers results in 24 to 48 hours. Granular fertilizer releases more slowly through the soil over weeks.

Many customers use both. Liquid for fast green-up between applications, granular for steady long-term feeding.

Can I apply Grass Powerhouse after using weed control products?

Let Grass Powerhouse Liquid Fertilizer dry fully, about 1 to 2 hours, before applying anything else. For weed control, wait 24 hours after it dries.

For seeding, apply Grass Powerhouse first and seed once dry, or wait until new grass has been mowed at least once.

Will Grass Powerhouse burn my grass if I apply too much?

Grass Powerhouse Liquid Fertilizer can cause burning if applied too often or to stressed grass. Stick to every 4 to 6 weeks and skip applications when your lawn is heat-stressed or drought-stressed.

When in doubt, water your lawn first and wait a few days before applying.

What is the difference between Grass Powerhouse, Lawn Strong, and Iron Boost?

Grass Powerhouse Liquid Fertilizer is a high-nitrogen 24-0-3 formula for fast, dense growth and deep greening. Lawn Strong pairs nitrogen with molasses for soil health. Iron Boost adds extra iron for even deeper color.

All three work together. Many customers rotate them through the season.

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Customer reviews

Based on 5 reviews!
Popular topics
Ll
LocationFranklin, Tn
Murdered my lawn

I’ve really liked some of the other products, like Nix Tix, Dandelion Doom, and Weed and Green, but this product absolutely killed my grass

Comments by Store Owner on Review by Sunday on Sat Jun 21 2025
Sunday
Hi Li, thanks for sharing your experience with us. Do you mind reaching out to our team so we can see what's going on with your lawn situation? You can reach them at [email protected] or by calling 415-903-6932.
Published date
06/21/25
Was this review helpful?
0
0
James A.
Verified Reviewer
LocationPensacola, Fl
Grass powerhouse

I applied the Sunday Grass powerhouse to my lawn in late March (according to my custom plan). It was very easy to use, instructions are very clear and didn’t take very long to cover both the front and back yards. The results have been amazing. You could tell the difference in about 24 hours. There i...

Published date
03/29/25
Was this review helpful?
0
0
Sean
LocationArvada, CO
EXCELLENT

I've been throwing everything i can at my lawn all season. Nothing has been working. I dropped this on it, and BAM! My entire lawn looks better than my neighbor, who uses Green Thumb lawn. Service. I'm buying a ton of this next year. Very happy with the results Sunday has given me. Will continue to ...

Published date
10/04/24
Was this review helpful?
2
0
Elliott
LocationHouston, TX
It's Intentional. I like it

It's easy to use. Clear on the intent and instructions. Keeps me aligned with the lawn that I am building but with a partner instead of my randomness.

Published date
06/29/24
Was this review helpful?
2
1
Ernest
Verified Reviewer
LocationDayton, OH
Urea Nitrogen Based Synthetic Fertalizer - Not Good For the Planet and Pets

The results are so-so, but I fell for the better for the pets, kids and planet marketing scheme. In the end, this is just another synthetic based Urea Nitrogen fertilizer no different than any other - except being way more expensive. If you care about the planet, do not use Urea based on the amoun...

Comments by Store Owner on Review by Sunday on Mon Jun 10 2024
Sunday
We designed Sunday with safety in mind, so we are extremely selective about not only the ingredients we use but also the lawn and garden techniques we recommend. We are proud to say we do not use many of the chemicals that are commonly found in traditional lawn care products; all Sunday fertilizers are 100% pesticide-free. Take a look here for more information: https://www.getsunday.com/shed/sunday-way/sunday-on-chemicals
Published date
06/09/24
Was this review helpful?
3
8

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