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Grass Powerhouse Liquid Fertilizer (2-pack)

$54 $60

(2) 42.3 fl. oz. pouches & hose end sprayer

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Grass Powerhouse 2-packGrass Powerhouse pouch with hand holding itdata sheetdata sheetdata sheet

Combination of nitrogen, seaweed, and iron for unparalleled growth and a deep green lawn.

Premium liquid lawn fertilizer — growth

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$54$60

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Grass Powerhouse 2-packGrass Powerhouse pouch with hand holding itdata sheetdata sheetdata sheet

Power up your lawn

Single pouches available exclusively in Sunday Lawn Plans

Grass Powerhouse is a premium fertilizer blend designed for powerful, sustained growth and deep greening.

This is our go-to solution for lawns looking for strong, sustained growth. With its high nitrogen content, seaweed extract, and iron-rich formula, it not only deepens your lawns green color, this powerhouse pouch improves stress resiliency and growth.

A Sunday premium selection

Premium fertilizers, enriched with potent nutrients and unique soil enhancers, outperform standard options to deliver superior, long-lasting lawn health.

Product Features:

  • 24-0-3 NPK (nitrogen-phosphorus-potassium) liquid lawn fertilizer
  • Premium fertilizer — concentrated nutrients and speciality ingredients
  • Supports rapid and extended growth and deep greening
  • Made for any lawn and grass type
  • Formulated without pesticides
  • Easy hose-on application
  • 1 pouch covers up to 5,000 sq. ft.
  • Includes liquid fertilizer in flexible reduced plastic packaging and a custom-engineered universal hose-end sprayer

Ingredients:

Nitrogen: For dense grass growth

Potassium: For plant turgor, water management and resiliency

Seaweed extract: For stress resiliency

Iron: For deep greening

Instructions:

For best results, apply early morning or evening, and make sure your lawn is adequately hydrated. Avoid use on drought-affected or heat-stressed lawns.

  1. Connect the universal sprayer to your hose and the fertilizer pouch. This sprayer is designed for the optimal mix of water and nutrients.
  2. Apply the fertilizer across your lawn until the pouch is empty, which should take about 10-15 minutes. Once the fertilizer dries, you can get back out on your grass.
  3. Reapply every 4-6 weeks spring through fall. Keep the sprayer for future applications.

Helpful Tips from Lawn Advisors:

How does fertilizer help my grass?

Grass needs nutrients to thrive—just like any other plant. Fertilizer provides these essential nutrients, enhancing your lawn's growth, color, and resilience.

How are Sunday premium liquid fertilizers different?

Sunday's premium liquid fertilizers, once exclusive to custom lawn plans, are highly concentrated with nutrients, soil amendments, and specialty ingredients for effective and fast results.

How much lawn fertilizer will I need?

For each treatment: Each fertilizer pouch covers 5,000 sq. ft. for one treatment. The number of pouches you receive for each application will depend on your lawn size.

How to apply alongside other Sunday products

Sunday fertilizers are made to work together! If using Sunday liquid fertilizers wait at least one week between applications. For granular fertilizers wait 4-6 weeks. For all other lawn products, let the fertilizer dry on the lawn first then apply other products.

When is it safe for people and pets to go on my lawn after applying?

Our ingredients break down quickly and don’t persist in the environment. After our products dry, you can get back to using your lawn!

Are there any US states where this is not approved for use?

This product is approved for use in all states.

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Sunday liquid lawn fertilizer pouches side by side on a lawn

Liquid Lawn Fertilizer Instructions

Get a greener lawn with Sunday's nutrient-rich liquid lawn fertilizers. Follow our easy instructions and application tips for optimal growth and greening across your lawn.

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Customer reviews

Based on 5 reviews!
Popular topics
Ll
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 Store Owner on Sat Jun 21 2025
Store Owner
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
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
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?
1
0
Elliott
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
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 Store Owner on Mon Jun 10 2024
Store Owner
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?
1
9

$54$60