Sunday Lawn & Garden Care

Grass Machine Liquid Lawn Fertilizer

42 fl. oz. pouch + hose-end sprayer

LAWN PLAN EXCLUSIVE

Sunday Grass Machine liquid lawn fertilizer 42 fl oz pouch with hose-end sprayer for green grassGrass Machine Fertilizer GrassPouch Application Hose End SprayerSunday Liquid Lawn Fertilizer Use TipsGrass Machine Liquid Fertilizer ApplicationGrass Machine Liquid Lawn Fertilizer Data SheetGrass Machine Liquid Lawn Fertilizer Data SheetGrass Machine Liquid Lawn Fertilizer Data Sheet

Liquid fertilizer for grass growth

An ideal combination of nitrogen, iron, seaweed, and potassium to turn your lawn into a grass-growing machine.

sunday-guarantee-badge

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

Related products

LAWN PLAN EXCLUSIVE

Sunday Grass Machine liquid lawn fertilizer 42 fl oz pouch with hose-end sprayer for green grassGrass Machine Fertilizer GrassPouch Application Hose End SprayerSunday Liquid Lawn Fertilizer Use TipsGrass Machine Liquid Fertilizer ApplicationGrass Machine Liquid Lawn Fertilizer Data SheetGrass Machine Liquid Lawn Fertilizer Data SheetGrass Machine Liquid Lawn Fertilizer Data Sheet

Your lawn's green-up starts here

Grass Machine is a 15-0-3 liquid lawn fertilizer with nitrogen, iron, potassium, and seaweed. It works on all grass types, hooks to your hose, and covers your yard in about 10 to 15 minutes. No mixing, no measuring. Grass Machine is pesticide-free, so your lawn gets fed without the extras it does not need. Pair it with a Custom Lawn Plan or add Weed and Green for a complete routine.

What makes Grass Machine Liquid Lawn Fertilizer different

  • 15-0-3 NPK for growth, greening, resilience
  • Iron and seaweed deliver deep green color
  • Hose-end sprayer included, zero mixing
  • Works on all grass types and lawns
  • Pesticide-free, made with plant-based ingredients
  • Covers up to 3,000 sq ft per pouch

Ingredients

Nitrogen (15%): Fills in and thickens your grass by driving leaf and blade growth across your whole lawn.

Iron: Delivers that deep, rich green color you notice from the street. Your neighbors will notice it too.

Potassium (3%): Helps your lawn hold onto water and bounce back from heat, foot traffic, and dry stretches.

Seaweed: Supports greening and long-term turf resilience. Think of it as a multivitamin for your lawn.

How to use

Apply early morning or evening when temperatures are between 50 and 85 degrees F. Avoid using on drought-stressed or heat-stressed lawns.

  1. Connect the hose-end sprayer to your garden hose and attach the 42 fl oz pouch.
  2. Turn on the water and walk your yard, applying evenly until the pouch is empty. This takes about 10 to 15 minutes.
  3. Once the liquid has dried on the grass, you're good to get back on your lawn.
  4. Reapply every 4 to 6 weeks from spring through fall for steady feeding all season.
  5. Keep the sprayer for future use. Let liquid fertilizer dry completely before applying other products like weed control or grass seed.

How fast does Grass Machine liquid fertilizer start working?

Grass Machine gets to work as soon as you apply it to your lawn. The nitrogen, iron, and seaweed start feeding your grass right away, and steady results build with each application every 4 to 6 weeks.

Should I water my lawn after applying Grass Machine?

Grass Machine works best when your lawn is already well hydrated before you apply it. No need to water after. Just let the liquid dry on the grass, and you are good to get back on your lawn.

Is liquid fertilizer better than granular for lawns?

Grass Machine liquid fertilizer absorbs quickly and covers your lawn evenly in just 10 to 15 minutes with the included hose-end sprayer. Liquid feeds are easy to apply and give your grass fast, consistent coverage compared to spreading granules by hand.

How much area does one pouch of Grass Machine cover?

Grass Machine covers up to 3,000 sq ft per 42 fl oz pouch. Just connect the included hose-end sprayer to your hose and apply evenly until the pouch is empty. Keep the sprayer for future use.

Can I mow my lawn after applying Grass Machine?

Grass Machine needs time to dry on your grass blades before you mow or walk on your lawn. Once the liquid has fully dried, you are all set to mow, play, or hang out on your lawn as usual.

How often should I apply Grass Machine to my lawn?

Grass Machine works best when you reapply every 4 to 6 weeks from spring through fall. Apply early morning or evening when temperatures are between 50 and 85 degrees F, and avoid applying to drought-stressed lawns.

Sunday liquid lawn fertilizer pouches side by side on a lawn

Customer reviews

3.4

starstarstarstarstar

Based on 5 reviews

5 reviews

  • Korri S.

    Verified Reviewer

    LocationPort Orchard, WA

    starstarstarstarstar

    Great Product

    I've had great success with this product! We put down turf in early spring and it kinda died out by next spring. Used the product and within a few weeks after it started to warm the grass came back!!

    Sunday

    Hello Korri! We're delighted to hear about your success with our product! Can't wait to hear about the continued growth of your lawn in the future.

    Was this review helpful?
  • Nick

    Verified Reviewer

    starstarstarstarstar

    Good but need hose connector

    I bought the set from Costco. The first one worked great but I didn't know that there was only one hose connector which I accidentally threw in the trash and now I don't have a hose connector and 3 bottles that I cannot use

    Was this review helpful?
  • Paul

    Verified Reviewer

    LocationFlorida

    starstarstarstarstar

    Ugh 😣

    Dropped the pouch on the grass while using. Picked it up and continued on … did not realize one of the pouch seams busted open and it was leaking … lost produce and when I was crossing over my driveway, a new driveway on a new home by the way, the product stained my driveway and I can’t get the stains out.

    Sunday

    Hello Paul, we are truly sorry to hear about your experience with our pouch. If you prefer a more natural approach, lemon juice or white vinegar may help lighten the stain depending on how much product was spilled, how long it sat, and whether the concrete is sealed. Just be careful to prevent runoff into the lawn, since both can cause some grass burn if they reach turf in concentrated amounts. For tougher stains, a dedicated concrete cleaner may be more effective. The same caution applies here. Avoid allowing any cleaning solution to run into nearby grass. Keep in mind that both natural remedies and commercial cleaners can affect the concrete seal. It may be worth checking with your installer to see what they recommend before applying any stain removal treatment.

    Was this review helpful?
  • Travis

    Verified Reviewer

    LocationMN

    starstarstarstarstar

    Get a better dispenser adaptor.

    Dispensor stops applying product when pouch hits mark 1. All dispensers provided same result.

    Sunday

    We're sorry to hear that this was your experience with our hose-end sprayer, Travis! Our team would love to help you with a new sprayer. You can reach them at [email protected] or by calling 415-903-6932.

    Was this review helpful?
  • Joseph T.

    Verified Reviewer

    LocationWaterbury CT

    starstarstarstarstar

    Did FRONT LAWN

    APPLY GREEN MACHINE Not GREAT RESULTS!!!

    Sunday

    We're sorry that your results weren't as expected! While Sunday typically delivers excellent outcomes, every lawn is distinct and may encounter different challenges each season. Have you connected with your Yard Advisor yet? They're available to assist you in optimizing your product experience. Reach them at [email protected] or by calling 415-903-6932.

    Was this review helpful?