20 Best Herbicide For Vegetable Gardens (2023 Updated)

Preen is great, it works fairly well, preventing weeds from sprouting-up. When using it, one must be sure to spread it all evenly; don’t be afraid to use lots of it. It’s always a great idea to spread the Preen down 1 or 2 days before a rainy-day, water activates the Preen…either by natural-rain, or by a water-hose.

I always rely on the rain, and it works-out for me. The Preen works for 3 months, preventing most all weeds, it does a great job. I highly recommend using this style of Preen. 1 of these full-unopened containers weighs 18 pounds.

Please see the 6 attached photos I provided for this review…I bought 2 of these containers. I highly recommend this product. Lastly, these containers afterwards can be used as storage buckets or for whatever…they are made of high-quality and recyclable plastics.

The Preen is shipped via Walmart-boxes with plenty of protective-packaging surrounding it. I was highly impressed with the shipping-and-handling of these 2 products, I bought 2.

This works pretty well, and isn’t scary to put on food crops. It’s a natural product made of corn and while it doesn’t prevent Weeds perfectly, it definitely makes an important difference and reduces the number and size of weeds, and seriously reduces the maintenance workload in my veggie garden.

I like to put it around established onions, beets, carrots, and beans – the things that are so hard to weed and hoe around.

I previously bought Preen labeled “organic” and now find it is labeled “natural. ” I went online and found Preen is very toxic to birds, animals, and humans if we get it on our hands. Be careful spreading this product around unless you have no regard for the environment.

It is not that it doesn’t work, but the labeling is deceiving. BE AWARE.

We have a small farm with a very long, and large, gravel driveway. We use this once a year to control grasses and weeds that grow in the gravel driveway as well as controlling grasses around our barn, under our trees, and on the sidewalks.

This also knocked out poison ivy in a few spots if applied thick enough. Combined with a Stihl backpack sprayer, we couldn’t be happier. For mixing, add water slowly as others have suggested. It will foam with fast water flow and can overspill if not careful.

When applying, we walk backwards and spray in front of us to prevent walking through the chemical. One bottle/container covers everything we need. We’ve applied annually for the last three years and have noticed less and less return growth.

Results are noticed in a few days.

I sprayed diluted roundup solution around the trunk of my oak, green ash trees and roses to remove weeds growing in this area (also called area inside the drip line). The herbicide effectively killed all the weeds in this area: the weeds dried up and turned to a beige color.

Unfortunately, the chemical also caused some damage to the oak, green ash and roses: their leaves became twisted and leaf growth was stunted. The upper part of some rose trunks died as well. It was indeed noted on Google that these chemicals can damage the roots of plants or trees that have shallow roots.

It is a great product for killing weeds. Just be aware about not to apply directly around or too close to trees. I think such a warning on the label would be very helpful to users.

I have used Roundup on my property for about the last 5 years. I like the product but there are major issues with material. When I bought my first container with a sprayer, it worked very well. I used it immediately after purchasing it from Home Depot.

The next year I still had the spray container, so I purchased the refill container and the material worked fine. I also needed more material and I bought the super concentrate so that I could mix my own material At the end of the summer I had used only half of the material, and so I kept the spray container with the product in it in my garage over the winter.

My garage doesn’t freeze, since it is attached to the house. The next spring, this year 2021, when I tried to use the sprayer, it didn’t work. I opened the container and found that the product had jelly lumps in it and therefore they were clogging the fine openings in the sprayer.

I cleaned the sprayer and screened the product. When I sprayed it on the walkway weeds nothing happened. The material had lost its potency. I read the labels on the containers carefully and found no mention of self life and also proper conditions for storage of the material.

So I bought another container of Roundup with a sprayer on it. The newly purchased product worked wonderfully. However, I needed more, so I made a new mixture from the Super Concentrate that I had purchased two years earlier.

When I used it, it did not work at all. So there is a self life to the super concentrate. That really troubled me, because the Super Concentrate cost about $73. 00 when I purchased it. So my questions are twofold: 1.

Why is there no statement on the containers that state there is a self life associated with the product; and 2. Why is there no expiration date printed on the container. This is really a lack of sensitivity to the residential customer.

I finally wet on the web and read a lot of reviews. The jelly effect isw known and posted on various sites, but the RoundUp website does not give one proper storage conditions. Further reading lead me to a statement several layers deep into the RoundUp website that the shelf life is 4 years.

That is a meaningless statement, since they do not give you the storage conditions used to develop that number. When a residential customer buys the product from a retail store, there is no indication as to how old the product is.

And for the residential user, that has stored the material along with other gardening materials, there is no way of knowing the effectiveness of this product. The labeling and instructions really need to be vastly improved.

As a final note, I have read many of the reviews posted here. People who use the product when it is potent, get excellent results. But other individuals present information that indicates that they have product that is past its shelf life and found that it does not work.

As a result the distribution in ratings is bimodal.

Spring is here, and the weeds are starting to pop up! My flower beds are huge, usually taking 40 bags of mulch each spring, and trying to control the weeds can be exhausting. This year, since I was given this Preen Weed Preventer to review, I took this opportunity to use it while putting on a new layer of mulch.

Following the directions I got rid of the weeds that had already popped up, and I used the application lid to spread Preen on top of the mulch and over a brick walkway that always gets so many weeds between the bricks.

Even though I applied it very liberally it only took 1/2 the bottle to do all of my flowerbeds and the walkway, plus under the deck. Since the product should last 6 months that gives me another application for the fall in the same container.

The granules are quick to spread with the application lid, and I haven’t seen any new weeds poke through the mulch or brick walk yet since applying it a couple weeks ago. I am happy with Preen so far and look forward to a great season of not pulling weeds.

This stuff is amazing for flower beds! By now in my neck of the woods I would normally be pulling weeds like mad from my beds and having a tough time keeping up since this is the beginning of the growing season but I was able to apply Preen Extended Control Weed Preventer in time to stop the emergence of new growth.

I can testify that it is already working as there are no new sprouts coming up, and my beds look so clean under the plantings. This product is so easy to apply – just shake directly on the ground around existing plants.

I especially love that this is a 6-month control formula so I won’t necessarily need to apply again until fall. I am so pleased with this product and will be exploring more of their line of gardening formulas in hopes they will make my gardening life simpler.

A must-have for all display gardens!.

I have been using the regular Preen for many years and always had good results. When I discovered the Preen Extended Control, I was expecting to have good results and saving myself the time to not have to put the product down two times per growing season.

I put the Preen Extended Control down in March and followed application instructions as per usual. We live in MD, zone 7a. We have over 2 acres of property and several large flower gardens. My flower gardens have always been beautiful in the past, but this year the weeds are overwhelming! Attached is a photo of just one small area.

This stuff just flat out works. Like many have said, it takes a bit for it to show results, but rest assured, it will kill whatever you spray it on provided you FOLLOW THE IMSTRUCTIONS on the label. I guess some have quite unrealistic expectations but hey, it does the job and you save a bunch of monye vs the Big name brands.

I mean isn’t the point that the weeds end up dead? You cand overspend if you wish or you can save money. Either way the weeds end up dead. Not a hard choice for me. Don’t listen to anyone who says this stuff doesn’t work.

They probably expected way faster results and were disappointed at the speed. It kills weeds. PERIOD.

Can’t get this in our local stores anymore. I still need to take care of our estate and that means getting rid of vegetation overgrowth. This stuff does the job like no other! Mix 3 ounces to a gallon of water, add a little surfactant (I use Dawn soap) spray it on the leaves of the undesired vegetation.

all dead in a few days. Used it to kill several small trees as well. It’s great stuff! Its 41% glyphosate and it works. Great price too! 2. 5 gallons should last a while but I’ll buy several more before the end of 2021.

They will probably outlaw it like everything else. Buy some today, keep your yard looking great!.

It killed the weeds and some grass. It doesn’t permanently kill weeds. They dry up and die but come right back. It does however kill every bird, squirrel, and rabbit that gets food from your yard. We have not seen this issue with other brands.

Only this one. I don’t feel like it is safe for pets to go in the yard even after this is dry. Seriously dead birds everywhere and we still have weeds. Huge fail!.

I maintain 10 desert acres. The way out of weed takeover by July and I mean farm-like sections of weeds, is to pre emerge yearly! I have to be selective around vegetation and the house directly, but for the furthest areas around my property, I use an atv sprayer.

The first year preemerging, we got surflan southern weed killer, the second year we got TVC. I was worried about the TVC and was looking for something as effective but not as devastating. I saw a video for the RM43 and got it! It seems to have worked great and I like how it kills existing weeds as well! None of the other preemergants did that! I was even still spraying weeds with the leftover mix out of a sprayer.

It left NO Green!! I use Caseron for in and around vegetation and good ol picking them everywhere else every year. Unless I find something as good or better and less expensive, I’ll be buying the RM43 from here on out!.

We have 4 homes spread out over several acres of family property. I keep about 12 acres of the property mowed and cleared. That includes weed eating around each home, several outbuildings, and a very wide, long drainage ditch.

It has become too much for me over the last couple years, so we have using herbicide in place of most of the weed eating. I mixed this product at a rate of 2 quarts in a 25 gallon sprayer. We sprayed a little over 125 gallons of mix over 2 days.

It took about 4 days before we started noticing any effect, but within a week it was obviously working well. Now 2 weeks later the RM43 has killed everywhere we sprayed. As noted in the instructions, it will get into the root system and spread to surrounding plants whether you want it to or not.

Not a big deal to me but it might be to others. Don’t use it in areas you don’t want everything dead. It kills at least twice as much as you intend it to. I think the prices are ridiculous but if it lasts a full year, it will be worth it.

We have an 18×10 area that is mulched and covered in crafted metal animals and lawn art, antique ox pulled plow, carousel horse, etc. It doesn’t look great when it is covered in weeds that grow through the supposed weed mat.

I tried the normal ground clear products and no results. Then my Tractor Supply associate told me about this product. It works like a charm! In a few hours, start to see a little brown in the weeds and in two or three days everything’s dead.

I use it 2x a year and no issues. I also use it on our parking pads, flagstone patio, sidewalks, and in our mulched backyard area. While it seems more expensive, it really isn’t, because you mix it with water, so you can make gallons of it for your sprayer.

I have a small landscape design and installation business. I preen my clients 3 times, minimum. I am annoyed that you raised your product prices while using deceptive advertising on the size of container.

Prices went up 5. 00 per container yet each container weighs 1. 5 lbs less. Looks the same, thus being deceptive. I send out my yearly contracts in January with 3 rounds of preen. Each client now cost me more to preen since the average loss is 9 to 9.

5 lbs. Then 2 out of 6 containers had 2 scoops, thus SHORTING me more preen. 10 lbs minimum.

This product I have used for years! Excellent results to control my enemy, Mr. Weed! Keeps the tomatoes clear and beautiful. and productive. Also excellent in my rose beds. Leave it, forget it. and enjoy your time not weeding!.

The foam spray bottle product makes a foam, which is actually quite important, as it allows you to see where you have sprayed. I applied this product to grass on a cobblestone walkway that had grass coming up between the stones.

I applied only where there was vegetation that I wanted to target, and I made certain to whet all leaf/grass green surfaces. Weather was sunny, but cooler 12-16C. It took a week, but everything I sprayed is dead as dead can be.

Some new growth has started after several months, but it is quite muted and a small respray should get it. HOWEVER, the coverage with the 1L bottle was a paltry 3sq m. Not impressed much with that. In addition, I do not believe the spray bottle can be refilled from the 5L bottle called “Ready to apply refill (7g/l)”, as this product does not have a foaming agent.

Regarding the various product options, I made a little chart, which I attach here. Looks like I paid the most per kg for Glyphosate that I could have managed. Bonus. Summary: Buy a more concentrated form, so you pay less for Glyphosate, and control your own dilution ratio.

If you need foaming (you do) good luck with that.

After using Preen weed preventer in a drum in western NY for years I had expected good results from any product w/ that name. I wasn’t, however, prepared for the toughness of weeds in rural, northwestern NC.

Even when I changed to using the Southern formula to deter weed growth, it didn’t seem to work in my newly established flower beds. When I started 2 small 4′ x 4′ raised vegetable beds a few years ago I though I’d give the Preen for vegetables weed prevention a try.

It worked good in the beginning, but then I was confused by the instructions. One place said to refresh it every 4 to 6 weeks, while another said to use it weekly. Since I was used to the every other month method, that’s what I did, but it was too late because weeds had already started to grow.

So, I did some hand weeding & shook out more of the granules to deter more weeds, but then I lost several plants to deer, rabbits, etc. I gave up that season & put in different vegetables the next year & started using the Preen every week.

Then I ended up having to have surgery & there went that year’s crop! I still have a bottle & a half of the Preen for vegetables, but between bad health & nibbling animals, I only do container gardening now on my screened porch, so I have no need to use any sort of weed prevention.

Will you buy the product back?.

Here it is, April all ready and I am starting to see small weeds starting to sprout in the flower beds. I’m trying out roundup weed barrier this year to stop the never ending weeds. First I removed all the little sprouts prior to spreading the weed barrier.

Very easy to use with the bottle spout. The directions include a very small picture, which is supposed to show what the density of the granules should look like on the ground, but it is very hard to see, much better if you look online to find a better image.

I left part of the bed untreated for a comparison in a few months. I’ll report back later on the barrier results.

I put this on my beds shortly after receiving. My beds contain river rock stone and grass prevention is critical. In April, Michigan had 23 days of periodic rain. Bottom line I still have more grass than desired but I don’t blame it on Weed Barrier.

We are due for a warmer dryer week coming up. I plan on pulling the sprouted grass then re-applying the Weed Barrier. Weed Barrier packaging makes application very easy. I’m confident this product will solve the grass in bed problem.

Very easy to spread out because it is granules and not a powder. This way you can see exactly where you are putting it. This is important because it not only kills weeds , it also kills grass. You need to be careful not to get it on your lawn accidentally.

Just have to rake it in a little and then water and you are all set for 8 months. I do this before I mulch this way you will never get any weeds coming thru your mulch. A great product that doesn’t cost very much and can last 8 months.

This is a real winner.

I used the Ortho Ground Clear Super Weed & Grass Killer as soon as it started to get warm in Northern VA and it quickly killed the weeds down to the roots, before they got the chance to spread. The product was easy to use, the sprayer head has built in flexible tubing allowing you to plug into the container and carrying around.

The sprayer can be controlled to spray a stream or foam. The spray stream allows control to get into cracks or stay away from plants and flowers. The killer is effective and kills the weeds down to the root.

The weeds have not come back after dying. The Ortho Super Weed & Grass Killer is a quality product and seemed to work better than other products I have used in the past. I feel that this product by Ortho is safe to use and I trust the Ortho Scott Miracle Grow products that I have used over the years.

I finally had a chance to use this Ortho ground clear on a few broadleaf weeds I found in my mulch area. I sprayed the weed in the afternoon after I watered my grass and after about 24 hours they looked wilted and brown.

Perfect kill!! Now onto the pump sprayer. I’ve used similar products with battery powered spray wands and I wasn’t that impressed. This sprayer is just a simpler spray wand. The product comes out as fast as you can pump the handle and then simply hang it on the side of the container when your finish.

I’m summary I would say this is a 5 star plus product. If I can get good weed kill in cool spring weather then I know I’ll get great kill in the summer heat. HIGHLY RECOMMEND!!!.

I don’t know why this stuff is so good. Some sort of secret Ortho sauce. I have tried so many other brands and potions on Amazon, and this is still the champ. I always see results in 24 hours. and it does keep it clear for the season.

I live in a desert-ish climate, so maybe the lack of humidity magnifies its power for me, but this is a great product. I have to buy multiples and use a backpack sprayer. My only point of dissatisfaction is the lack of availability of the concentrate version at the time of this writing.

The concentrate can produce 5 gallons of solution for near the same price. But the product itself – 5 stars all the way!.

my yard was out of control with seedlings, dandelions, clover, and all sorts of weeds. I live in idaho where we have hot summers and droughts. used 2 applications a week apart from eachother. the mix should be about 3 oz to every gallon of water.

wait 24 hours to water. killed everything but CRABGRASS. My lawn is coming back real nice. would highly recommend unless your just dealing with crabgrass go with something else.

The sprayer itself works the first time, but after that it just won’t allow pressure to be pumped up and becomes very hard to get more than a trickle out. I bought the regular roundup in the same ready to use sprayer and had the same problem.

Cheap and nasty product. When it comes to the actual performance of the poison, I had to spray clovers and regular lawn weeds 3 times over the course of 3 weeks to get them to start turning brown. Other products I’ve used from a competitor brand, have always worked within days without damaging the lawn.

I tried roundup because of the media reviews, but clearly they are all paid to say it’s great.

I had a big problem with dandelions in a flowerbed alongside a path that just got worse every time I weeded it. I didn’t want to kill everything or poison with glyphosate so looked for an alternative.

This works well, needed a couple of doses but has been really effective on the dandelions whilst leaving other things. Hopefully next year I will be able to plant something else there and won’t get the same problem.

I have loads of dandelions everywhere else which I’m happy to keep for the bees and other insects – just need some diversity. Arrived on time and was reasonably priced, so worth buying.

Bought 6 of theses for a community group, for a back ally scheme. We bought this one because it has the none added chemical. ( this one is a bit more friendly to insects and bees ) The pump & spray is much better application than mixing in water and using a watering can, you can direct the spray to the weeds rather than pour everything and lots of the weed killing mix run off the plant ,being wasted.

This weed killer killed weeds within the hour, ( depending on the weed ). Some of the residents have said they are converted & would use this again. They didn’t think it was going to be a easy task to get rid of those pesky weeds, but it’s been easy & quick.

Great stuff, and it works really well in south Louisiana’s tropical climate including poison ivy. Great price. Quick delivery. Happy with purchase.

3 months after i paid a yardservice to kill the weeds. It looks like it was fertilized. Disappointed. Angry

Living in Arizona, we don’t have grass but that doesn’t stop the weeds from growing in our rocks. Scott’s works great to kill the weeds. We spray in the evening and by morning the weeds are dead. Highly recommend.

We do only use it in the front yard as I don’t know that it is pet safe.

I like using the Scott’s Round up on the driveways, brick areas and gravel areas of my yard. Do not use this on grass areas, flower bed or gardens. I use this product a few times a year especially on the brick and gravel areas.

I would recommend this product.

We use Scott’s Round-Up Pro Weed Killer Concentrate both at our house and also at one of my two jobs. At home, it completely kills our randomly sprouting weeds that were popping up all over the lawn thanks to the overabundance of insects and wildlife pollinating and spreading seeds.

At work we use it to keep the weeds from coming up through all of the cracks in the asphalt in our parking lot and it also takes care of the few weeds that like to try growing in our picnic area as well.

All in all Scott’s has always done a great job keeping everything weed-free.

Buyer beware. I wasn’t thinking when I ordered this product. I didn’t pay attention to “RTU” and I didn’t realize it means Ready to Use. The picture on the container is very similar to the picture of the KleenUp concentrate which is also 128 oz.

I thought I was ordering the concentrate and was getting a good deal even after paying $12 for shipping. A total of about $30 for what Amazon was charging $40 with free shipping. It ended up that I paid a little over $30 per gall for vegetation killer whereas if I had paid $40 plus $2.

40 tax for Amazon’s concentrate I could have mixed 62 gallons for an average cost of less than 70 cents per gallon. Bottom line, if you have a tank sprayer, don’t buy the Ready to Use, buy the concentrate.

The RTU is about 48 times more expensive after factoring in shipping costs. As for the product, it does a good job of killing whatever is sprayed.

I used to use KleenUp and then the place i bought it at, closed. It’s been 3 years of not being able to keep the weeds in between my patio rocks to stay away. Have had to re-do 3 times a season. One shot with KleenUp always did the job.

This year i decided to look it up/order. KleenUp is the best weed killer. I will never stray again.

Ive used Roundup but Kleenup is much better. Roundup shows results in a day while kleenup takes a week. However, Kleenup seems to kill more types of weeds and they dont come back.