Preen Garden Weed Preventer 5.6lb: Granules for Gardening Care, 3-Month Protection
Highly rated
$14.69
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4.4 out of 5 stars with 565 ratings
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4.3 out of 5 stars with 438 ratings
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4.7 out of 5 stars with 1456 reviews
quality: 4.33 out of 5
value: 4.33 out of 5
100% would recommend
6 recommendations
1 out of 5 stars
Thumbs up graphic, would recommend
26 June, 2025Verified purchase
Preen can't be shipped
I can’t even use it. It came with every lid off and Preen all over
5 out of 5 stars
31 May, 2025
originally posted on preen.com
Great product
When spring comes, I weed my garden with a weed pole, easy, pick up some big ones, plant my new annuals and apply preen. No weeds grow. After a few weeks I turn my soil a bit with my weed tool and apply again. I love it. I like a weed free garden bed.
5 out of 5 stars
Thumbs up graphic, would recommend
8 June, 2024Verified purchase
Preen
So far no weeds. Easy to use. 1 container took care of my entire flowerbed.
5 out of 5 stars
12 May, 2024
originally posted on preen.com
Love Preen
[This review was collected as part of a promotion.] I have used Preen for my flower beds for the last several years. I am elderly & cannot bend over to weed so this is a godsend. Last year I started using it in my vegetable garden. Since I only plant established plants it worked really well. Between using the preen & a muclh, my garden was a breeze to care for.
1 out of 5 stars
7 July, 2023
originally posted on preen.com
Wasted money
Purchased your product for years and have never seen it work so poorly. I even reapplied and still am spending hours weeding my garden. It's either a bad batch or they're reformulated and it's now a bad product.
1 reply from CSR team - 3 years ago
We are sorry to hear of the surprising results experienced with our Preen Garden Weed Preventer product! This product will only prevent new weeds seeds that are listed on the label from germinating. It will not kill any weeds that are up and actively growing. We stand behind our products when applied accordingly so please feel free to reach out to us at customerservice@lebsea.com. Thank you!
5 out of 5 stars
8 February, 2023
originally posted on preen.com
Excellent Weed Preventer
I'm a PNW flower gardener and Preen works! It is truly a back and knee saver! Every January I check my flower beds for emerging weeds and moss & pull them out or hoe. Then immediately sprinkle Preen all over the clean soil avoiding emerging spring flower bulbs such as tulips, daffodils, iris, peonies, etc. Preen keeps my flower, herb and veggie beds weed free, especially before Easter when the spring flower "show" blooms! Many people stop by to walk thru my garden and always ask how I keep weeds out of the flower beds and I always recommend them to buy and regularly use Preen b/c it works! It's a winner!
5 out of 5 stars
1 May, 2022
originally posted on preen.com
Destroys weed seed bank!
Preen works. It's not perfect as it's important to remember to put it down before there are chances of weeds starting to germinate, and if it were perfect, I wouldn't have to remember to do this in time! LOL. I have a steep hill which has been a nightmare to weed; actually somewhat dangerous it's so steep. I started using Preen every winter (I live in CA where weeds mainly grow in the winter) regularly to control the germination of weeds around the existing plantings. It gradually worked better and better. I've been using it for about 10 years now. I think over that time the weed seed bank has been exhausted and now weeding each year on this area, which used to take about 20 hours per year, now takes about 20' or less. Many people may not realize that pre-emergents actually kill the seeds. They don't stop the seeds from germinating; they kill them after they start germinating. This is ideal because over time, it will gradually kill all the weed seeds in the soil surface. A key is to not till or otherwise disturb the soil because you'll just keep bringing new seeds up to the surface and you'll never get rid of all the weeds. Preen is expensive, but it has saved my lower back and knees. Well worth it. Oh and it has never appeared to hurt any of the existing desirable plantings. I wrote this review because I saw a bunch of one star reviews and actually got a bit mad. This is a good product and it can help deal with overwhelming weeding situations. I didn't want other people to think it didn't work. It's just that, like with any herbicide, there are instructions that need to be followed carefully and the target weeds and the timing of application are critical to success.
5 out of 5 stars
28 June, 2021
originally posted on preen.com
Worth the money, so far!
I have used this product for the 1st time this year after I redid my landscaping and this product seems to be doing exactly what its suppose to do, so far!
1 out of 5 stars
13 June, 2021
originally posted on preen.com
Not impressed
I used this 2 weeks ago and followed the instructions. Weeds have already come back.,
1 reply from Csr team - 5 years ago
Weeds coming up that soon after application were most likely weeds that were already in the process of germinating by the time Preen was applied. Preen would have no affect on those weeds as it only prevent new label listed weed seeds from germinating. We recommend pulling the visible weeds and reapplying Preen in those areas. We do stand behind our products when applied according to label directions. Please contact us at www.Preen.com/feedback so we may further assist it needed. Thank you!
1 out of 5 stars
21 May, 2021
originally posted on preen.com
Absolutely worthless
I tilled my veggie garden mid March then applied Preen heavily, raked and watered in. Tilled again mid April, applied heavily again and watered in. Planted May 1. Now weeds starting everywhere. Should one should apply it so thickly that it acts as a mulch? See pic and scroll in
1 reply from csr team - 5 years ago
Preen Garden Weed Preventer should be applied to a weed free area at a rate of 1 oz per 10,000 sf on normal soil followed by a watering or rain to activate every 3 months. Tilling a treated area is a soil disturbance and will result in erratic weed prevention. For further assistance, please contact us at customerservice.com
5 out of 5 stars
Thumbs up graphic, would recommend
17 May, 2021
Weed be gone!!!
Great fir keeping weeds from germination around my flower beds. Really works!!!
3 out of 5 stars
24 August, 2020Verified purchase
(no review title)
Worked for about a month, now the weeds are coming back. I guess it beats having to pull weeds every week since I sprinkled it down. But, the price of it has gone up since I purchased it in July. So, not sure if I would try it again or not.
5 out of 5 stars
31 July, 2020
(no review title)
Quite surprised how well this works! Will definitely buy again!
1 out of 5 stars
7 July, 2020
originally posted on preen.com
Great job except this year!
I have used Preen Weed Preventer and had success for the past 10 to 15 years. This year, it did not work at all. I applied it the same as I have in other years just before a rainfall, with the scoop, etc. I have never weeded more than this year! The same weeds it has prevented in the past are taking over my landscaping. I have talked to a few people who use it, including family members, and they seemed to have the same situation as I am experiencing. What happened this year? I use 4 of the 16# size. It was unfortunately a big waste of money and time this year. Disappointed.
1 reply from CS team - 6 years ago
In this instance sounds like weeds this product does not control. We will reach out to the consumer and offer our money back guarantee.
1 out of 5 stars
27 May, 2020
originally posted on preen.com
Huge disappointment
bought the black mulch with the weed prevention and didn't work at all. Within a few days I had more weeks than normal. Huge disappointment
1 reply from CS team - 6 years ago
Sent consumer the link for the money back guarantee.
5 out of 5 stars
3 March, 2020
originally posted on preen.com
Used Preen for 20+Yrs.
I would not have used Preen over 20 years if I wasn't happy with it. Theressa
1 out of 5 stars
11 July, 2019
originally posted on preen.com
Waste of my money
Tried this stuff a few times and each time same results. Weeds thrive on this stuff, never seen one dead weed. Just a lot more weeds. This years tried it in a much smaller area and same results. Weeds was less until I put preen on it than holy smokes they weeds are horrible. Pretty sure they put some kind of fertilizer in this stuff because weeds love it!
1 reply from customer service team - 7 years ago
Thank you for your review! We are very sorry to hear that our Preen Garden Weed Preventer did not perform as you had expected it to. This product is to be applied to bare weed free soil. It will not kill anything as it is a weed preventer not a weed killer. Any existing weeds need to be removed prior to application of this product.
5 out of 5 stars
29 April, 2019
originally posted on preen.com
Worked great! Just as it said it would.
I have been using Preen and Green for years and it works wonderful! It works best in the flower garden if you put it on in the early spring around plants that are at least 3" tall. Lightly scratch it in the ground and water or put it on before a rain shower. It won't work as well if you put it on and then put mulch over the top. If your going to add mulch then put it on the top of the mulch layer and scratch it in and water. If you need to, say if you have a lot of rain, then reapply after about 2 months, again take it in lightly and water. I've also put it in my vegtable but not until the plants are up at least 3 inches. I think people who have had poor results probably haven't read the instructions, this is crucial!
5 out of 5 stars
Thumbs up graphic, would recommend
29 April, 2019Verified purchase
Preen
Excellent product , superb price.
1 out of 5 stars
25 August, 2018Verified purchase
Very Dangerous product, received will not use
Upon receiving product and reading instructions/cautions; I am afraid to use this product...........too dangerous.
1 reply from Preen Customer Support team - 8 years ago
Thank you for your review! We are very sorry to hear that you feel our product is too dangerous to use. I can assure you our Preen Garden Weed Preventer is safe to use when applied as label directed. Please feel free to contact us our customer service department at customerservice@lebsea.com with any questions or concerns regarding our products.