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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Best Seller






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
- Attach the sprayer to your hose.
- Apply evenly to a dry lawn, temperatures between 50 and 85°F.
- 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.

Customer reviews
4.1
Based on 251 reviews
Customers say
AI-generated from customer reviews.
Customers appreciated the effectiveness of the Weed & Green Pre-emergent and Post-Emergent Weed Killer in improving the health and appearance of their lawns. Many noted significant reductions in weeds and greener grass, though some experienced mixed results.
Reviews with media
Popular topics
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.
Was this review helpful?Great product!
Worked as advertised, and easy to use with the hose attachment.
Was this review helpful?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 behind.
Was this review helpful?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 healthy. Should know more by next year but overall I’m happy with the product.
Was this review helpful?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, but just wasn’t strong enough to fully kill. I think next season I will plan to buy earlier and use earlier for sure.
Was this review helpful?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!
Was this review helpful?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!
Was this review helpful?Worked well
Worked exactly as expected and I was even happier that it is better for the environment! Thank you Sunday!
Was this review helpful?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! Very Satisfied!
Was this review helpful?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 less expensive than the local monthly service provider we used in the past.
Was this review helpful?
Questions & answers
35 questions
Question: Can I use weed and green around vegetable gardens. The wife doesn’t want whatever I spray on weeds to get into the food.
Sunday
Sunday Weed & Green is labeled for lawns only, not for use in vegetable beds or directly on edible plants. Around veggies you’ll want to: Keep all spray off the garden soil, foliage, and dripline. The hose-end sprayer makes drift pretty likely near beds. Leave at least a few feet of untreated buffer between the sprayed lawn and your vegetable rows, especially on the down-slope side. If you need weed control inside or right next to the beds, hand-pulling, hoeing, mulching, or a targeted spot-spray product that’s specifically labeled for use in and around vegetables is the safer route.
Question: How long after seeding can you apply Weed & Green?
Sunday
We recommend waiting until your new grass is fully established before applying Weed & Green. A good rule of thumb is to wait until you've mowed the new grass at least 3 times before using any selective weed control product. Applying too soon can stress or damage young seedlings, so a little patience now can help your new lawn get off to a stronger start.
Question: How long after application should we see results? Applied almost 24 hours ago and I don’t notice any difference.
Sunday
Thanks for checking in! Weed & Green isn’t an overnight magic trick, even though we wish it came with tiny lawn wands. Most broadleaf weeds start showing signs of curling or browning within 2 to 5 days, with full results in about 2 to 3 weeks. The lawn nutrients begin feeding your grass right away, but greener growth is usually noticeable within 1 to 2 weeks depending on weather and watering. Hang tight a little longer, and your lawn should start showing off soon.
Question: Is safe for zoysia?
Sunday
Zoysia can be a little picky so it’s smart to check. Weed & Green is generally safe for zoysia when used as directed, but it’s best applied when the grass is actively growing to avoid stress. You’re on the right track keeping your lawn healthy and weed-free
Question: I over seeded my lawn in the Fall of 2025. Can I use this product now in Spring 2026? I'm in Minnesota. If not, what do you recommend?
Sunday
Since you overseeded in Fall 2025, your lawn should be established enough by Spring 2026 as long as that new grass made it through winter and has been mowed a few times. Pre emergent style products can prevent new seed from germinating, so the key is making sure you are done establishing before applying. If you still have thin areas or plan to seed again this spring, hold off on applying and focus on getting that grass established first. Otherwise, you’re in a great spot to move forward.

