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Espoma Organic Weed Preventer-25 lb. CGP25, 25 lb

4.1 4.1 out of 5 stars 1,013 ratings
Brand Espoma
Item Weight 1 Pounds
Liquid Volume 25 Liters
Item Form Granules
Active Ingredients corn gluten meal

About this item

  • Made from corn gluten meal
  • Feeds lawns to ensure a deep, green color and prevents weeds by inhibiting root development in seedlings
  • Apply twice per year, early spring and fall
  • Granulated for easy application, Espoma Organic Weed Preventer provides long lasting nitrogen for a thicker, greener lawn
  • Children and pets can safely play on lawn after application.

Customer ratings by feature

Easy to spread
4.3 4.3
Easy to use
4.1 4.1
Value for money
3.0 3.0
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Product Description

Product Description

Espoma Organic Weed Preventer . All natural weed preventer and lawn food . Prevents dandelions, crabgrass and other common weeds. Provides long lasting greening that won’t burn.

From the Manufacturer

Made from corn gluten meal, an all natural by-product from the manufacturing of cornstarch, Espoma Organic Weed Preventer feeds lawns to ensure a deep, green color and prevents weeds, including crab grass and dandelions, by inhibiting root development in seedlings. Children and pets can safely play on the lawn after the application. Apply twice per year, early spring and fall. Granulated for easy application, Espoma Organic Weed Preventer provides long lasting nitrogen for a thicker, greener lawn. Derived from: corn gluten meal and contains 8.23% slow release nitrogen. 25 lbs. covers 1,250 sq. ft.

Product information

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Espoma Organic Weed Preventer-25 lb. CGP25, 25 lb

Espoma Organic Weed Preventer-25 lb. CGP25, 25 lb

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Top Brand: Espoma

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Customer reviews

4.1 out of 5 stars
4.1 out of 5
1,013 global ratings

Customers say

Customers like the color, pet friendly and eco friendly of the weed moss control agent. They mention that it gets their lawn green and thickens it to total beauty. However, some feel the results cannot justify the high cost. They also dislike the smell. Customers disagree on weed growth, performance, and quality.

AI-generated from the text of customer reviews

25 customers mention22 positive3 negative

Customers like the color of the weed moss control agent. They say it makes the lawn look nice and green, thickens it to total beauty, and brightens up their lawn right away. Customers also mention that the product is awesome and natural.

"Greens up the yard and safely removes weeds over time. This is my second application. Must be patient with this product...." Read more

"...This is an awesome natural, corn based, product...." Read more

"...The lawn stays lush and green without any weeds. My neighbors commented on how good my lawn looks and asked me about the type of grass;)" Read more

"I applied this in my back yard and while my yard looks very good, there is still a great deal of clover and crab grass...." Read more

25 customers mention25 positive0 negative

Customers find the weed moss control agent pet friendly and free of toxic chemicals. They say it's an organic product that does not harm their dogs. Customers also say it works for their grass and doesn't poison their pets. They mention that the product doesn' t have any hazard warnings and is a great way to avoid using poison on the lawn.

"...It does work if applied as directed and I have the satisfaction of knowing it is safe. My dogs and wildlife are safe from chemical herbicides." Read more

"...That’s okay, our lawn is lush after a nice mow. It is also non-toxic...." Read more

"...The product doesn't have any hazard warnings, and I showed many of them the bags to reassure...." Read more

"...this product for a couple of years in my desert location and it is amazingly safe and effective with no odor at all...." Read more

14 customers mention14 positive0 negative

Customers like the eco friendly of the weed moss control agent. They say it's an organic product that is great for organic lawn care. They also appreciate that it'll not harm their pets or kids. They mention that it is a natural derivative from corn and that it takes a few months to completely prevent.

"It really cut down on my dandelions!It did so organically... I don't have to worry about my pets/children playing in the yard." Read more

"This is a very eco-friendly product that is effective but it’s important to read the directions and get the timing right for application...." Read more

"...I like it because it is organic and does not harm my dogs." Read more

"...Yellow dust gets all over you, but I am happy it is not chemical based. This is expensive and difficult to find locally...." Read more

80 customers mention48 positive32 negative

Customers are mixed about the weed growth. Some mention that there are less weeds and more grass after applying the product. However, others say that it doesn't help with established weed.

"...This is a product that prevents the seeds from sprouting. It does not kill the weeds. You must be patient I am on year #4.Am I weed free?..." Read more

"...It is not a contact killer on established weeds! If you do not apply this during times when weeds are germinating then it won't be effective...." Read more

"Greens up the yard and safely removes weeds over time. This is my second application. Must be patient with this product...." Read more

"...this for a second year in a row I noticed that weeds have almost completely disappeared...." Read more

61 customers mention32 positive29 negative

Customers are mixed about the performance of the weed moss control agent. Some mention that it works well for a few months, while others say that it doesn't work nearly as well as what they'd normally use. Some customers also say that the fertilizer part works well, while other customers say that they've seen little to no visible results.

"...Must be patient with this product. It does work if applied as directed and I have the satisfaction of knowing it is safe...." Read more

"...seems that if it gets damp while sitting around in storage, it doesn't work very well and IT IS NECESSARY TO WATER IN the product after it goes..." Read more

"...It worked so well that I did the whole yard and I did not get the usual weeds after the summer rains started, either." Read more

"...This corn gluten did nothing at all the first year, but we had read that it sometimes took a couple of years to see results...." Read more

27 customers mention18 positive9 negative

Customers have mixed opinions about the quality of the weed moss control agent. Some say it's a great product and provides a good piece of mind, while others say it smells horrible, attracts bugs and birds, and the box the product was in was falling apart.

"...Good thing is all natural but I can’t imagine it’s good for her to eat. She’s been snacking it off the grass for days every time I look the other way." Read more

"...Also great piece of mind knowing we aren’t using harmful chemicals. Even our neighbors have started to ask us about this product. Highly recommend!" Read more

"...Flies everywhere. Then a few days later, all of the ground is moving a shifting, the ground is loaded with maggots...." Read more

"Good stuff" Read more

39 customers mention9 positive30 negative

Customers are dissatisfied with the value of the weed moss control agent. They mention that the results cannot justify the high cost, it's a total waste of money, and it stinks.

"You need to use enough. Yes, it is expensive, but it works...." Read more

"...Awesome product that is a little pricey but it makes up for this by not requiring me to suit up like a chemical worker...." Read more

"...It was a TOTAL WASTE OF MONEY. Now I have to hire someone to pull all the weeds in the flower beds, etc...." Read more

"...I still think it’s worth the extra money bc our goats, chickens and horses graze on the area we treat and done correctly we noticed a huge difference..." Read more

11 customers mention0 positive11 negative

Customers are dissatisfied with the smell of the weed moss control agent. They mention that it has a horrible smell and attracts flies.

"...Several days passed and the stink just increased so I sprayed it with vinegar, covered it with sand and finally tried clay used for oil on your..." Read more

"...One bag was fine. One clumpy and smelly. Can't get product support for this item." Read more

"...dark moldy lime-sized clumps and a dozen quarter-sized clumps and they were smelly. It was as though moisture got in and something grew inside...." Read more

"Bag smells like fermented beer as soon as I opened it. Solid blocks of white furry mold throughout the bag...." Read more

Moldy product in bags
3 Stars
Moldy product in bags
Two out of three bags had clearly been wet at some point as there were large chunks of moldy material in them. I tossed about 1/4 of the bag.
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Top reviews from the United States

Donna
5.0 out of 5 stars Takes time… read reviews!
Reviewed in the United States on September 19, 2023
Verified Purchase
In order to use a product like this to keep your yard organic it takes about seven years to get rid of your weeds. This is a product that prevents the seeds from sprouting. It does not kill the weeds. You must be patient I am on year #4.

Am I weed free? No. But I have noticed a considerable amount of less weeds in my yard. I have three more years to go. Just be patient you will be if you don’t care about the environment as I do. I grow organically to the best of my ability. Just be sure you don’t over spread into your garden because then your seeds will not sprout. If you’re using this product knew your garden I highly recommend your plants are established already
12 people found this helpful
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Sean Deschene
5.0 out of 5 stars Great Source of Nitrogen, Plus Weed Prevention
Reviewed in the United States on May 31, 2022
Verified Purchase
I have been applying Corn Gluten Meal to my front yard for three or four years now. Along with overseeding in late summer, my grass is thicker and greener now than ever. Most weeds are getting choked out, but not all. This year's application was especially noticeable on grass growth, as we are mowing at about twice the frequency as the neighbor's lawn that is untreated. While this product stops germination when it is applied, I think the overall health of the lawn is what is reducing the dandilions--I apply corn gluten meal in the spring when the soil temps are around 55F, and the redbuds are starting to bloom, but dandelions germinate in the late summer or early fall when timing the CGM is almost impossible for me. I buy a bag a month on subscription and then apply en masse when the time comes--much more budget-friendly than trying to buy a dozen bags all at once.
14 people found this helpful
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Jean P
4.0 out of 5 stars Great grass product.
Reviewed in the United States on April 13, 2023
Verified Purchase
Greens up the yard and safely removes weeds over time. This is my second application. Must be patient with this product. It does work if applied as directed and I have the satisfaction of knowing it is safe. My dogs and wildlife are safe from chemical herbicides.
7 people found this helpful
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harold kanter
3.0 out of 5 stars Stains the sidewalk?
Reviewed in the United States on April 22, 2024
Verified Purchase
Must wait 6 weeks before seeding but really greens up!
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Noelle
5.0 out of 5 stars Follow directions and you’ll see progress.
Reviewed in the United States on July 2, 2020
Verified Purchase
You need to use enough. Yes, it is expensive, but it works.

You need to make sure you water the lawn heavily and you need to make sure that the gluten dissolves. I do this by doing a water, then going over the wet pellets again, and they dissolve.

This product may be more ideal if it were a powder, but I am not sure.

You will need many bags, if you have a decent-sized lawn. I used a Scotts spreader on a 6 setting and went over the lawn twice.

If you put this down in early spring and early fall, over time, the weeds will eventually reduce greatly. After one spring application, we have less weeds, but still have a couple of seasons until we see a huge change.
That’s okay, our lawn is lush after a nice mow. It is also non-toxic.

We couple this with the Fiskars weed grabbing tool for dandelions, and we have a healthy lawn that we feel is preserving the health of the Earth, too.

Bare feet = safe to run and play, with no chemicals.
16 people found this helpful
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shawn glines
1.0 out of 5 stars Doesn’t work well and has a bad side effect.
Reviewed in the United States on May 18, 2019
Verified Purchase
So I applied this in my garden as pulling weeds daily gets old. I put a light sprinkling and weeds kept growing. I applied a little more the following week, thinking maybe we had presprouted seeds and maybe they would stop soon. Still every day I had to pull a lot of weeds.

So, I decided, we must need a lot of this applied. I put down a good layer of the stuff.

DO NOT MAKE THIS MISTAKE.

So the next day I had bugs. Mostly flies. Not just some but a lot. And then the following day my garden had more flies than I have ever seen in one spot and exceeded that number by a lot! I cannot explain how many flies there were and still are out there.

I bought traps and they filled up after a day, and there were more flies. Flies everywhere. Then a few days later, all of the ground is moving a shifting, the ground is loaded with maggots. I have a maggot farm instead of a vegetable garden.

After a bit of googling I ran out to get diatomaceous earth as I don’t want poison in my garden.

Please flies go away.

Oh, and I’m infested with weeds now that I skipped a few days.

TLDR; if this stops weeds, it doesn’t stop much. Maybe it works on some types and not others? And this attracts bugs. A lot of them.
55 people found this helpful
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Siouxjo
5.0 out of 5 stars Finally a safe solution to my dandelion problem
Reviewed in the United States on July 19, 2021
Verified Purchase
I purchased this to try to get a handle on the dandelions in my lawn. I had just about given up and let them take over. I have a dog so I did not want to use poisons or chemicals so thought I was just going to have to let the weeds win. I applied this last spring and it took awhile but now, about 80% of the dandelions are gone! You just have to be patient as it takes awhile. The existing ones remained but no new ones came up and eventually the existing ones just died off too. My lawn is struggling a little but I am confident it will be back really soon. It worked so well that I did the whole yard and I did not get the usual weeds after the summer rains started, either.
3 people found this helpful
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theman
5.0 out of 5 stars Great product
Reviewed in the United States on May 24, 2016
Verified Purchase
Having applied this product multiple years now; the number of weeds spread by seed has gone way down in our yard. The remaining weeds are all those that spread via roots or other means outside of a seed. We apply it in early spring when soil temps get to 65 and then again in the fall. I also have snuck a cup of it into my sweet corn patch after the plants get going to suppress weeds and provide a good nitrogen boost.

It's important for buyers to understand how and why this product works. It targets emerging seedlings killing off the delicate root hairs that a young plant forms. It is not a contact killer on established weeds! If you do not apply this during times when weeds are germinating then it won't be effective. The good news is that the same time common spring and fall weeds are germinating is the same time it is best to apply fertilizer which this product doubles as. Do a little research on proper application of this product before purchase and you will be satisfied; I promise.
119 people found this helpful
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