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Weed & Green Pre-emergent and Post-Emergent Weed Killer

$25

(1) 32 oz. concentrate, covers up to 2,500 sq. ft.

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Stop weeds before they start. Handle the ones that already showed up.

Tackles dandelions, clover, and broadleaf weeds already in your lawn, suppresses crabgrass, and greens up your grass. No synthetic herbicides.

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$25

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Weed control that kills weeds, not your grass

Picture your lawn two weeks from now. Greener. No dandelions poking through. No crabgrass creeping in from the edges. That's what Weed & Green is built to do.

One iron-based formula handles five jobs at once: knocking out broadleaf weeds already growing, suppressing crabgrass and weed germination before they start, clearing moss and algae, helping keep lawn disease in check, and boosting grass color in the process.

Targets what shouldn't be there. Leaves your grass greener.

Now available in custom lawn plans. Not a subscriber yet? Build your plan.

What's doing the work

  • Broadleaf weed killer Tackles dandelions, clover, chickweed, and more on contact
  • Crabgrass preventer Suppresses crabgrass and annual weeds before they sprout
  • Moss, algae, and lichen control Clears what creeps in where grass struggles
  • Lawn disease suppression Helps keep common fungal issues out
  • Fast green-up Iron boosts grass color while it works on weeds
  • Hose-end ready Sprayer included, no mixing needed
  • Safe for all turfgrasses For cool and warm season grasses

Backed by our satisfaction guarantee

How to use

  1. Attach the sprayer to your hose.
  2. Apply evenly to a dry lawn, temperatures between 50 and 85°F.
  3. Reapply in 3 to 6 weeks if hardy weeds persist.

Seeding after Weed & Green: Wait 1 day before seeding. Heads up: Iron can stain hardscapes. Rinse any pavement immediately if you get drift. Not sure what you're dealing with? Use our weed ID guide.

What weeds does Weed & Green kill or control?

Broadleaf weeds including dandelions, clover, chickweed, spurge, and oxalis. It also suppresses germination of crabgrass and other annual grassy weeds, and clears moss, algae, and lichen. For a full weed list, check the product label in documents.

Can I put down pre-emergent and fertilizer at the same time?

You can on the same day, not the same time. Apply fertilizer first, let it dry fully, then apply Weed & Green. And yes, Weed & Green can be used as a pre-emergent and post-emergent weed control in the same season, just follow the timing on the label.

How often do I need to apply Weed & Green?

Apply once thoroughly to the lawn, and then reapply 3 to 6 weeks later in the growing season. We recommend only applying up to two times as a preemergent or post-emergent in your lawn.

When do I apply Weed & Green?

Early spring is your best window for crabgrass prevention, typically when soil temps are approaching 55°F. For existing broadleaf weeds, apply any time during the growing season when weeds are actively growing and temperatures are between 50 and 85°F.

Can I put grass seed down after Weed & Green?

Yes. Wait 1 day after applying, then seed as normal.

How long after applying is it safe for kids and pets?

Once fully dry, it's safe for kids, pets, and bare feet. On a warm sunny day that's usually 1 to 2 hours. Give it a bit longer if it's cool or humid.

How soon will I see results?

Most broadleaf weeds show visible wilting within 24 to 72 hours. Full results within 1 to 2 weeks depending on weed size and conditions. The green-up from iron is often visible within a few days.

How much lawn does the Weed & Green cover?

Each bottle covers up to 2,500 sq. ft. per post-emergent application, and up to 1250 sq. ft. for a pre-emergent application.

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Bottle of Weed & Green Hose-end Sprayer for Lawns on green lawn

Customer reviews

Based on 250 reviews!
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Mike S.
LocationCO
Great Product!

This stuff WORKS! I was skeptical but now I'm a total convert. I sprayed it down and was shocked to see how quick my dandelions and other weeds started dying. Plus this was only supposed to be the ground work pre-emergent. . . . Bonus points my dog was safely back on the lawn in under 24 hours.

Published date
04/06/26
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Chad
Verified Reviewer
LocationSavoy, Illinois
Great product!

Worked as advertised, and easy to use with the hose attachment.

Published date
05/27/25
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1
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Jen
Verified Buyer
LocationSt. Louis, MO
Most of our yard was crabgrass

Most of our yard was dandelions & crabgrass. We know have more grass than weeds. I should have seeded a few days after spraying weed & green. Listening to the instructions and waiting a week was a mistake. We will definitely purchase again and be smarter about filling in the gaps weed & green leaves...

Published date
05/25/25
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2
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Michael
Verified Buyer
LocationRockwood MI
Will use again

I used the weed and feed in my backyard because I have two dogs and it is recommended to be safe for kids and pets. It seemed to work really good with getting rid of the weeds. My backyard isn’t the greatest so I’m going to use it one or two more times this summer to see if the “feed” keeps my grass...

Published date
05/23/25
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2
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Richard
Verified Buyer
LocationEnglewood, NJ
Weed & Green

Been wanting to try this product. And it was finally in stock! I used it the first time in the beginning of April - some weeds were already starting to grow. I would say this worked very well as a pre emergent as I’ve seen much less weeds grow since. As a post emergent, I’d say it did start browning...

Published date
05/23/25
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1
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Jordan
Verified Buyer
LocationWarwick, RI
Stuff works

Works pretty well I had better results with this product than I ever had with any others. Still had a few weeds come through. Although If I did this a week earlier Maby they wouldn’t have. Overall I’ll definitely be buying more of it!

Published date
05/23/25
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Jennifer
Verified Buyer
LocationMurfreesboro tn
Weed and green

I LOVE this product!!! At the beginning of spring when the weeds started to pop up I applied the weed and green. It took care of the weeds and my grass is a lush and dark green! Super healthy looking lawn now!

Published date
05/23/25
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Mike
Verified Buyer
LocationMassillon Ohio
Worked well

Worked exactly as expected and I was even happier that it is better for the environment! Thank you Sunday!

Published date
05/23/25
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Sunday F.
Verified Buyer
LocationDallas, TX
The Comeback Yard

I had a lot of Dandelions and broadleaf weeds. I knew that I was going to try and let the grass push out the weeds but this year the weeds were taking over until I tried Weed and Green Pre emergent. It took about 3 days until I noticed all the weeds turn brown. Now the grass has a chance to grow! Ve...

Published date
05/15/25
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2
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Sunday F.
Verified Buyer
LocationRound Rock, TX
Looking Good!

So far I’m very pleased with the results in my first season using Sunday products. The weed and green is helping to prevent weeds and the lawn is definitely looking healthier this year. I appreciate the resources and schedule available on Sunday’s website. Simple to use, safe for the environment and...

Published date
05/13/25
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$25