Alternative to weed killer

For non-selective weed control this is your best alternative and which explains the success of glyphosate:


Read: This Map Shows How Much Glyphosate has been used in Every State

11. Judicious Use of Glyphosate

*Some contributors still insisted on using glyphosate although in a judicious manner*

Below is such a contribution;

There are many glyphosate alternatives – just that none are as effective or as cheap. Cheap not only in the product cost itself, but in the ease of application and longevity of the result.

I might spray glyphosate twice a year – with a backup of one spray of glyphosate.

On the other hand I might have to use a monthly spray (during the growing season) of a paraquat type chemical; or one application of an amitrol backed up with four or five paraquat applications.

Alternatively, depending on the weed profile, I might use one of the selective “grass” herbicides (twice a year), but that would also mean that I’d have to repeat the application with an herbicide specific to the broadleaf weeds.

Some of these latter chemicals are not compatible with some food crops and can damage them severely.

We used to do all these things – which was why when “Roundup” became available our farming became so much simpler.

12. Mulching as a glyphosate alternative

Preventing the contact between the weed seeds and the soil is a very clever way to fight the invaders in advance.

Cover the ground with mulch (you can also try a few layers of newspapers) to keep the seeds away from sunlight and thus limit their chance to sprout.

Both newspapers and mulch are biodegradable, so they will also improve the soil’s quality while smothering the nasty weeds.

​A weed barrier fabric​​​ has also been found to be most effective weed control product on the market today and, therefore, reduces the need for herbicides.

13. Use a Bleach

The bleach straight out of the bottle is very effective in killing grasses and other weeds.

Because bleach raises the pH level of the soil extremely high, it kills most vegetation and prevents it from growing in the near future.

Therefore, bleach is not your typical weed killer and it should never be used as a grass or weed killer on or near areas where you want other plants or grass to grow.

Read: 23 Notorious Weeds to Watch Out in Your Garden

14. Use Elbow Grease

Good old elbow grease is the best weed control. Before perennial weeds get established, remove the roots with a hand fork.

This is great exercise and very effective.

15. Eat the Weeds

Having done some reading I learned that many weeds can be a nutritious addition to our cooking.

Why not make a delicacy out of them! This is one of the most fun glyphosate alternatives – no doubt about it.

According to treehugger, the edible weeds that you can find in your yard might be different ones than the ones I find in my yard, due to weather, soil conditions, and geography, here are some of the most common garden weeds that can be used for both meals and medicine:

  • Dandelion
  • Purslane
  • Clover
  • Lamb’s Quarters
  • Plantain
  • Chickweed
  • Mallow
  • Wild Amaranth
  • Curly Dock

16. Salting

Salt is a great lawn maintenance product.

Sprinkle carefully your garden paths and the edges of your lawn to make a barrier for the weeds.

Treat the areas which cannot be reached by the lawn mower with salt (both rock and table salt will work) to make the space barren and ease the battle with weeds for a certain period.

17. Burning

Many hobby gardeners prefer this method because it is neither difficult, nor expensive. You will only need a weed scorcher or a blow-torch which are widely available on the market.

It is not even necessary to set the unwanted greenery on fire, as this can actually be very dangerous sometimes.

If you simply run the hot flame over the weeds, they will wither and die after no more than a few days due to the lack of moisture.

18. Boiling Water

This idea is also a very simple and inexpensive way to dispose of all the greeneries that have occupied your beloved garden.

Use the water in which you have boiled vegetables or pasta to go even more eco-friendly and not waste nature’s resources.

Just pour the boiling water precisely onto the weeds. It will take no more than several days for even the strongest of them to shrivel.

Scalding water is the ultimate nature-friendly way to kill weeds, but you will have to watch out as it might cause severe skin burns.

Read: Should You Worry About the Use of Glyphosate?

19. Competition

Principally, weeds are plants whose undesirable qualities outweigh their good points, at least according to us humans.

Our activities create weed problems since no plant is a weed in nature.

Though we may try to manipulate nature for our own good, nature is persistent. Through manipulation, we control certain weeds, while other more serious weeds may thrive due to favorable growing conditions.

Weeds are naturally strong competitors, and those weeds that can best compete always tend to dominate.

It is a natural law – the stronger ones survive.

Apply this principle and design your garden in a way that will create natural competition between your plants and the weeds.

Make sure you pick flowers and herbs that will consume the resources like water, sunlight and nutrients faster than the invaders.

This way you will stimulate the natural extermination of weeds without having to do anything else to kill them.

The healthier and richer your garden is, the fewer weeds you will have to worry about.

Choose the method which is best for your situation and deal with the unwelcome weeds once and for all.

After you manage to exterminate them, take as much advantage of them as you can. Use the weeds to make compost for your garden or include the edible ones (yes, a lot of weeds are edible) in your salads and meals.

Chicory, dock or dandelions can substitute spinach in many recipes.

However, in case you cannot identify which weeds are edible and which are not, it will be better not to experiment.

Some sprouts may even be poisonous, so dispose off them safely in case you are not 100 % sure you can consume or utilize them in some other way.

Done correctly, competition is one of the most effective glyphosate alternatives.

You’ve just read about the best glyphosate alternatives you can use today to kick out weeds from your garden. Now, it’s your turn.

Moreover, I’d like to thank everyone who contributed to the discussion on online gardening communities for helping us to put this list together.

I learned about a few cool new roundup alternatives myself!

We aim to keep this list evergreen and regularly updated.

So if you feel we’ve missed any great glyphosate alternatives when putting this list together, you can suggest them for inclusion in the comments or email them to [email protected]

Editor’s Note: This post was originally published in November 2017 and has been revamped and updated for accuracy and comprehensiveness.

Is There a Safe Alternative to Roundup?

Even as more people continue to learn about the dangers of Roundup—Monsanto’s best selling weed killer—the herbicide remains in heavy use in the U.S. and around the world. Many people are still unacquainted with the serious health issues posed by glyphosate, the active ingredient in Roundup, which was classified as a probable human carcinogen by the World Health Organization (WHO) last year.

The rise in sustainable, organic farming, coupled with the reported health risks associated with glyphosate exposure has prompted farmers, groundskeepers and gardeners to ask: is there a safe alternative to Roundup? The answer is yes, and employing an alternative to Roundup in gardening or agriculture is more important than ever.

Why You Should Use an Alternative to Roundup

Glyphosate is so widely used in the U.S. and around the world that traces of the chemical have been found in breast milk, cotton products, beer, wine (even when made with organic grapes), eggs, oatmeal and non-dairy coffee creamer, among other products. According to Beyond Pesticides, between 180 and 185 million pounds of Roundup products are applied every year in the U.S., making it the most commonly used agricultural chemical in the country.

The herbicide has also given rise to genetically modified food, which has been linked to health issues such as infertility, immune problems, faulty insulin regulation, accelerated aging and changes in major organs and the gastrointestinal system.

If the health risks are not enough to convince you to consider an alternative to Roundup, maybe the environmental impact will change your mind…

A recent U.S. Geological Survey study sampled waterways in 38 states and found glyphosate in the majority of rivers, streams, ditches and wastewater treatment plants that were tested. Glyphosate also was found in roughly 70 percent of rainfall samples.

Six Types of Alternative Herbicides to Roundup

Most of the alternative herbicides used by farmers or gardeners fall into the following categories:

  • Natural Acids (vinegar, and/or citric acids)
  • Herbicidal Soaps
  • Iron-Based Herbicides
  • Salt-Based Herbicides
  • Phytotoxic Oils (Essential oils such as clove, peppermint, pine or citronella.)
  • Corn Gluten

A number of different alternative herbicides use a combination of these approaches to great effect. In this article, we are going to discuss the acetic acid (vinegar) approach.

Using an Alternative to Roundup

In order to get the best results from a Roundup alternative, it is best to use in conjunction with other helpful practices, like working to improve soil health, plant nutrition and irrigation. Remember, an alternative to Roundup is generally going to be a contact herbicide, not a systemic herbicide, which kills the entire plant by entering the vascular system.

Contact herbicides generally work by burning plant foliage that comes into contact with the product. They are only capable of killing weeds that have emerged—they have no residual activity on weeds that emerge after application.

What You’ll Need for Alternative Herbicide

Acetic Acid – Commonly known as vinegar, acetic acid affects the cell membranes of a plant and causes rapid breakdown of foliage tissue on contact. Vinegar used for herbicidal purposes can be organic household vinegar, which is roughly five percent acetic acid or agricultural vinegar, which has an acetic acid concentration of roughly 20 percent. In sufficient quantities, agricultural vinegar by itself will quickly burn down a weed.

There is much debate on the efficacy of household vinegar versus agricultural vinegar in alternative herbicides. Research has found that acetic acid concentrations between 5 and 10 percent can provide viable control of very small, young weeds that have one or two leaves (or are within two weeks of germination). Larger weeds with three or four leaves more are likely to survive this concentration. Using higher agricultural vinegar with higher concentration of acetic acid and increasing the application volume can improve weed control.

Salt – Some choose to combine vinegar with salt to make their Roundup alternative more potent. Like vinegar, salt is a desiccant, so it dries out leaves and stems. Combining salt with vinegar will make your alternative to Roundup “extra strength.”

Oil or Soap – Oil will break down any coating or other natural barriers that many weeds produce to protect their leaves. By using oil or soap in your mixture, you give the vinegar and salt a greater chance to penetrate the weed. Additionally, oils and soaps break the tension water on weed surfaces, which keeps the mixture from running off.

If you would like more information on ingredient concentration levels for your alternative herbicide, check out this article from Garden Councilor.

Tips for Application of Your Alternative to Roundup

  • Alternative herbicides work best when applied on a hot day. If possible, wait until humidity is low and morning dew has burned off. This will allow the mixture to stay in contact with weeds.
  • Be careful not to spray the mixture on plants you do not wish to kill. You can do damage to the plants you are trying to protect if you aren’t careful.

  • Use gloves and protective eyewear, as the mixture can damage your skin, especially if you are using agricultural vinegar with higher concentration of acetic acid.
  • Larger weeds and perennial weeds may wilt or discolor after application, but in some cases, they will regrow a few days or weeks later. These weeds will require multiple applications to be controlled.

Are Alternative Herbicides Effective?

A University of Maryland study found that properly applied acetic acid-based alternative herbicides have promising results controlling the following weeds:

  • Broadleaf Plantain
  • Carpetweed
  • Common Chickweed
  • Crabgrass
  • Cutleaf Evening Primrose
  • Ground Ivy
  • Ladysthumb
  • Lambs Quarters
  • Oriental Mustard
  • Pale Smartweed
  • Spiny Amaranth
  • Tumble Pigweed
  • Velvetleaf

Glyphosate Alternatives for Weed Control

+ Read More

For post-emergent weed control, there are many products on the market. Recently, many alternatives to glyphosate for weed control have been created and tested. These glyphosate alternatives are safe and just as effective as glyphosate.

Instead of using Roundup or a similar glyphosate product, the glyphosate-free products in this category will control weeds that populate your yard in the spring, summer, and fall. Some of these alternatives are organic, some are natural, and other glyphosate-free herbicides are designed for use in greenhouses.

When creating a weed management program, it is important to consider timing. Typically, a pre-emergent herbicide should be applied in the fall and spring to prevent weeds from growing in your yard. If you forgot this step or are new to lawn management, you may notice weeds growing around your property.

These glyphosate-free post-emergent herbicides are designed to kill anything they are sprayed on, so take precaution when spraying your yard. Only spray directly on the weed you are trying to control. You will notice the weed or weeds will begin to die a day or two after spraying. Read the label of the product you are spraying for information on how often to re-spray and how long it will take to see total weed control.

Many herbicides that are alternatives to glyphosate can be used in greenhouses, when gardening, and in agricultural settings. Each product is different, so be sure to read the label of your glyphosate-alternative for where the product can and cannot be used.

If you need assistance selecting an alternate to Roundup and the best glyphosate-free product to use in your yard, give the experts at DoMyOwn a call at 866-581-7378 or email [email protected]

Can’t find the product you are looking for? E-mail us and we’ll get it for you!

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RoundUp has been in the news quite a lot lately – and the news is alarming. RoundUp has been declared a probable carcinogen by the International Agency for Research on Cancer (IARC), an arm of the World Health Organisation (WHO). ( Retail stores across Europe are taking glyphosate – the main ingredient of Monsanto’s Roundup – off their shelves, despite government officials declaring it safe to use. ( France has banned the non-commercial use of RoundUp, and Brazil is following suit.

The effect of RoundUp on honey bees is not yet clear. One study published in the Journal of Experimental Biology found that honeybee navigation is affected by ingesting traces of the most widely used herbicide worldwide, with potential long-term negative consequences for colony foraging success. Another study published in the Journal of Economic Entomology found that glyphosate had relatively low toxicity for honey bees, but this study only tested by spraying bees and noting if they survived – they did not look at the effects on the colony as a superorganism.

It is clear that RoundUp, and other household pesticides and herbicides, are widely overused. It’s time to come up with a gentler approach to controlling weeds.

The Jackson County Master Gardeners have published a recipe for a weedkiller that is totally safe and works as well as RoundUp. The recipe is based on information on using vinegar (acetic acid) as an alternative to RoundUp published by the University of Maryland. The article lists some commercially available products that have acetic acid as their main ingredient, BUT only one is listed for homeowner use by the Oregon Department of Agriculture in their Fact Sheet for Vinegar/Acetic Acid Recommendations

Burn-out – 25% acetic acid (St. Gabriel Laboratories). 1 gal $39.95; 2.5 gal conc $99.99

Two other products are recommended in the Oregon fact sheet: Nature’s Glory Weed and Grass Killer RTU, and Greenergy’s Blackberry and Brush Block).

The Jackson County Master Gardeners have published a recipe for making your own vinegar based alternative to RoundUp:

  • 1 gallon 10 per cent vinegar
  • 1 cup of salt
  • 2 tsp Dawn dish soap or vegetable oil (to make it adhere to the plant)

Roundup® by Monsanto is touted as a safe, environmentally friendly and easy to use herbicide. Critics denounce it as a toxic, hazardous chemical. Which is right?

Roundup is a broad-spectrum herbicide, meaning that it has negative effects on nearly every plant with which it comes in contact. It is used for spot treatment of gardens, lawns, paved areas, and some agricultural crops. The active ingredient in Roundup is a chemical compound called glyphosate, which works by preventing the plant from making proteins that are necessary for plant growth. As a non-selective herbicide, Roundup will kill most plants, except for genetically modified crops that are designed to resist the weed killer.

Evidence strongly suggests that Roundup’s so-called ‘inert ingredients’ may be more problematic than the ‘active’ ingredient, the chemical glyphosate. That’s why, when Monsanto talks about their popular group of weed killers, they always say “the active ingredient is non-toxic”. They never talk about the inert chemicals in the actual product, which are known to kill earthworms, beneficial insects and beneficial microorganisms. In addition, recently, there have been numerous studies that have linked Roundup® to non-Hodgkin’s lymphoma. A number of detailed articles on this complex issue can be found at this link

Here is one that addresses soil health.

If looking at these studies raises doubts in your mind about the safety of these glyphosate products, there are all-natural alternatives that exist, which play the same role in weed management. Acetic acid, fatty acids, and essential oils can all act as herbicides. A novel product and organic approach is found with Avenger Organic Weed Killer. Avenger’s active ingredient is d-limonene (citrus oil), is a non-selective, post-emergent organic herbicide that safely kills weeds, grasses and broadleaves. Avenger is EPA and OMRI approved for organic gardening. GrowItNaturally is proud to offer this organic weed killer as a natural alternative to herbicides like Roundup.

Weed Killer Guide may collect a share of sales or other compensation from the links on this page.

Do you want to finally get rid of the pesky weeds in your lawn or garden? Everyone knows how important it is to kill weeds when it comes to proper garden and lawn care.

With that in mind, you really need to invest in the strongest weed killer to finally kill and control weeds and prevent them from coming back.

However, note that you can’t just pick any weed and grass killer in the market without spending time reviewing all your options thoroughly. Remember that the best weed preventer and killer for your needs will be dependent on the specific types of weed you would like to get rid of.

Also, you need to check the effectiveness of the product first. The best weed killer should be an effective product in the sense that it can really attack and disrupt the life of the plant or weeds you’re targeting.

That’s why you really have to spend time reading reliable reviews and buyer’s guide, such as this one to help you make a sound buying decision.

Strongest Weed Killer Comparison Table

Product Image Features Latest Price
1. Ortho GroundClear Vegetation Killer Concentrate
  • Easy to apply
  • Fast-acting
  • Non-selective
2. Southern Ag 2,4-D Amine Weed Killer
  • Long-lasting results
  • Easy to apply
  • Very effective
3. Roundup 5107300 Extended Control Grass & Weed Killer
  • Versatile
  • Dual-action formula
  • Convenient to use
4. Compare-N-Save Concentrate Weed and Grass Killer

Best Value

  • Targets roots
  • Environment-friendly
  • Cost-effective
5. RM43 43% Glyphosate Plus Weed Preventer

Longest Lasting

  • Ideal for spot control
  • Easy to use
  • Concentrated formula
6. Roundup Grass & Weed Killer Super Concentrate

Best Choice

  • Highly versatile
  • Rainproof
  • Non-selective
7. Southern Ag Crossbow Specialty Herbicide
  • Completely waterproof
  • Environment-friendly
  • Easy to apply
8. Spectracide Grass & Weed Killer Concentrate2
  • Highly flexible
  • Results within 3 hours
  • Prevents regrowth
9. Roundup Grass & Weed Killer Concentrate Plus
  • Highly powerful
  • Safe to use on lawns
  • Effective and economical
10. Scotts Halts Crabgrass & Grassy Weed Preventer
  • Powerful product1
  • Can treat a wide area
  • Safe even with children around

10 Strongest Weed Killer on Market (Reviewed 2019)

1. Ortho GroundClear Vegetation Best Weed Killer Concentrate

If you are in search of a non-selective weed killer then the Ortho GroundClear Vegetation Killer Concentrate is definitely a remarkable choice.

Because it is non-selective, it has the ability to kill most weeds where you applied it to. It often works well on hard surfaces as well as those with unwanted vegetation. These include the cracks in your patio and gravel.

Aside from killing all kinds of garden weeds and vegetation, its active ingredients also ensure that they won’t re-grow or come back again. Some of the ingredients used in the advanced formula used in this weed killer are glyphosate and imazapyr – both of which can be expected to work efficiently, especially when applied to environments that are over 60 degrees Fahrenheit.

One remarkable fact about this type of weed killer is that it is fast-acting, which means that it really works quickly.

In fact, it can give you visible results in just a few hours. Once it kills the weeds and vegetation, you have an assurance that it is capable of preventing their new growth for a maximum of one year.

It is also designed to handle unwanted weeds and vegetation from a wide range of areas, including the fence rows, patios, walkways, and driveways. Furthermore, you will find it a pleasure to use because of the ease of the application process. All it takes to apply this weed control solution is to use a tank sprayer or a sprinkling can.


  • Kills all weeds in lawns or gardens because it is non-selective
  • Works fast – expect results in just hours
  • Prevents new growth of weeds and vegetation for a year
  • Easy to apply
  • Handles unwanted weeds and vegetation from various areas


  • Produces some unwanted smell after the first few hours of use

2. Southern Ag 2,4-D Amine Weed Killer

Another of the strongest weed prevention solution that you can take advantage of is the Southern AG 2,4-D Amine. It is a highly effective selective weed killer, which is truly appropriate for your needs if what you are trying to control are broadleaf weeds.

What’s good about this weed killer is that it utilizes a distinctive patented formula composed of 2,4D, Mecocrop, and Dicamba – all of which are designed to deal with a wide range of broadleaf weeds present in your garden or lawn.

The fact that this formula only makes use of a low 2,4D level is also a big advantage because it also means that it offers favorable and noticeable results when you use it on sensitive weeds and grass, like the bentgrass, buffalo grass, and St. Augustine.

It is ideal for use on garden and lawn weed and grasses, particularly those in parks, meadows, and golf courses.

Many users also consider it as the strongest weed preventer because of its ability to kill apparent and unseen weed species, particularly those that just have developed beneath the ground.

Just make sure that you apply this product accurately based on the detailed instruction indicated on its box. It makes use of a potent and powerful mixture designed to work efficiently and produce long-lasting results.

It is easy to spray across the targeted area or apply it using an applicator nozzle. What’s even better about it is that while it’s effective in killing weeds grasses, it is also capable of leaving enough space for beneficial plants and grasses to grow at their full strength.


  • Effective in killing broadleaf weeds
  • Uses a distinctive and patented formula, making it effective in dealing with various species of weeds
  • Kills even those unseen weeds
  • Capable of providing efficient and long-lasting results
  • Easy to apply or spray


  • Comes with a bit of chemical smell
  • May require users to do multiple applications or treatments in some cases

3. Roundup 5107300 Extended Control Grass & Weed Killer

Another of the few types of weed killer that you can choose is Roundup 5107300. What’s good about this non-selective weed killer is that it has the ability to kill weeds from the roots, thereby preventing their regrowth or lowering their risk of coming back.

Such is made possible by ensuring that the product gets absorbed through the plant’s leaves then ensuring that this goes down to the roots to guarantee a complete weed stop for lawns and gardens.

One thing to take note of about this weed killer is that it is available in a container equipped with a trigger sprayer, which you can use in killing and preventing weed and feeds for a maximum of four months.

The simplicity of this product also provides you with a simple solution for keeping your mulched beds, patios, and driveway look great while being free of weeds. It can also handle both post-emergent and pre-emergent weeds, thereby making it a versatile product to invest in.

Another favorable advantage of this weed killer is that it has the capacity of giving users their desired results in as little as three hours. It is also designed in such a way that it becomes rainproof within just ten minutes.

It is a dual-control product, which is hassle-free to use. In fact, you get the chance to use its pre-mixed version placed in its bump-and-go spray bottle, making it ready to use.


  • Kills weeds down to the roots, thereby preventing their regrowth
  • Versatile as it is effective for both pre-emergent and post-emergent weed
  • Makes use a dual-action formula, thereby boosting its effectiveness
  • Produces results in as little as 3 hours
  • Hassle-free and convenient to use


  • Might kill beneficial plants and grasses in vegetable and fruit gardens when not used carefully

4. Compare-N-Save Concentrate Weed and Grass Killer – Best Value

If you wish to invest in any of the weed and grass killers that contain glyphosate then the Compare-N-Save Concentrate Weed & Grass Killer is definitely for you. It contains around 41% glyphosate, which makes it a product with high concentration.

What you should take note of about this product is that it is strong and non-selective, which is the reason why you have to dilute it correctly prior to each use.

Upon spraying this product, you can expect it to travel through the weeds’ roots, thereby killing them within just 2-4 days. It is totally effective in the sense that you have to take extreme care and caution when using it so you can prevent drift.

It is because it might kill the other plants that come in contact with it, even those that are beneficial to your garden. The good news is that you can make adjustments to its concentration so you can use it for dealing with even hard to kill weeds.

It is ideal for use on lawns that are of medium to large sizes, producing your desired effects. One more advantage of this weed & grass killer is that it is completely harmless to the environment. It can also show its rainproof ability within just 2 hours while having the ability to treat an area, which is more than 25,000 square feet.

It is also one of those products showcasing its high level of cost-effectiveness.


  • Kills weeds by targeting their roots
  • Allows adjustments on its concentration
  • Works ideally for medium to large-sized lawns
  • Not harmful to the environment
  • Guarantees a wide coverage, more than 25,000 square feet actually


  • Results are not that immediate – It takes a bit longer for it to produce its results when compared to the others.

5. RM43 43% Glyphosate Plus Weed Preventer – Longest Lasting

Another of the strongest option for a weed killer and preventer containing glyphosate is the RM43 43% Glyphosate Plus Weed Preventer. As its name suggests, it has around 43% of glyphosate in its formula.

It is ideal for you if you wish to invest in a weed killer that’s useful as a treatment for bare grounds. It is known for providing remarkable benefits as far as preventing unwanted vegetation for up to a year is concerned. Such ability showcases how strong and powerful this weed preventer is.

You will also find it useful for spot control, especially when used on vacant lots and farm buildings. Another reason why this product receives good reviews is that it comes with clear and easy to understand directions for using it.

That said, anyone who wishes to do a full weed stop and control in their garden or yard can do it. You will also love the fact that reconstituting its concentrated formula is very easy.

Another benefit of this product is that it is safe for the environment as well as for pets and children. All it takes is for you to apply reasonable and minimal safety measures without the need to go overboard. It is also a great product to invest in because aside from being offered at a low price, it is water-resistant, too.

Rest assured that this weed preventer can produce long-lasting results that are not going to be washed away by water or rain.


  • Prevents unwanted vegetation for a maximum of one year
  • Ideal for spot control, particularly on vacant lots and farm buildings
  • Easy to use and apply
  • Uses a concentrated formula, which anyone can easily reconstitute
  • Safe for the environment and the people around


  • Not ideal for areas where you are expecting growth of vegetation for the next year

6. Roundup Grass & Weed Killer Super Concentrate – Best Choice

If you are interested to use any of the non-selective systemic weed killers in the market then you will find the Roundup Grass & Weed Killer Super Concentrate an ideal option for you. It is a widely known brand, which continues to earn great reviews because of its many benefits.

Unlike some brands that only deliver mild results, this one is more heavy-duty. That said, there is a hundred percent guarantee that it effectively handles serious weed issues.

It also works aggressively in the sense that it kills both weeds and grasses, including really tough ones, like broadleaf weeds. Despite its aggressive and heavy-duty action, it is also gentle enough that it is safe to use around other beneficial plants as well as in your driveways and sidewalks.

It is designed in such a way that it can also solve widespread issues on weed and grasses. You will find it easy to apply using a tank sprayer.

If you want to gain the perfect results then consider adding around 2.5 ounces of this solution in every gallon of water. The versatility of this strong weed killer is also noticeable because you’ll find it useful around fences, foundations, and edging, as well as in patios, mulch beds, and gravel areas.

It also works in large areas, like lawn replacements and renovations as well as garden plot predation.

Furthermore, it tends to deliver its rainproof function within just 30 minutes and can be expected to cause the yellowing and wilting of weeds within just two to four days.


  • Capable of handling serious weed issues
  • Boasts of its aggressive and heavy-duty action, allowing it to kill even tough grasses and weeds
  • Easy to apply with the aid of its tank sprayer
  • Highly versatile as it can be used in various areas and applications
  • Designed to be rainproof after just 30 minutes


  • Prone to foaming, especially when the running water used in the mixture comes out too fast

7. Southern Ag Crossbow Specialty Herbicide

The Southern Ag Crossbow Specialty Herbicide is also another excellent choice if you are in search of a non-selective and post- and pre-emergent herbicide capable of controlling a wide range of annual and perennial broadleaf weeds, as well as unwanted grasses and woody plants.

It is a highly flexible herbicide in the sense that it is efficient when used in various areas, including non-irrigation ditch banks, industrial sites, roadsides, rangelands, fence-rows, and non-crop places.

The low volatility of this product also means that it can kill weeds without harmful effects to the environment and to your pets and the kids around.

It can tackle a wide range of problematic grasses and weeds, including blackberries, poison oak, poison ivy, and chickweed clover. One more advantage of this strong weed killer is the fact that you can effortlessly apply it using a wide range of sprayers. These include the tractor-mounted and the handheld sprayers.

It is also completely rainproof. This rainproof effect can be expected two hours after the application. You will also find it effective in spot applications. All you have to do is to use around 4-6 ounces of it in 3 gallons of water then spray it to the targeted spots thoroughly.

Another great advantage that anyone likes about this weed killer is the fact that it is possible to mix it with a liquid nitrogen fertilizer that is appropriate for foliar applications. Such a combination can promote weed and feed control in just a single step.


  • Handles a wide range of weed and grass species
  • Does not harm the environment and animals
  • Easy to apply with the aid of different sprayers
  • Completely waterproof
  • Works well in spot applications as well as in broadcast treatments


  • Not suitable for timber, crops, and plants are grown for commercial purposes or for sale

8. Spectracide Grass & Weed Killer Concentrate2

Another of the strongest weed preventers and killers that you should include in your list of options is the Specracide Grass & Weed Killer Concentrate2. In fact, it is one of the excellent gift ideas for anyone who loves gardening and is interested in investing in a non-selective herbicide.

It delivers a really powerful performance as far as killing more than 155 weed species and types to the root are concerned.

It is effective as a crabgrass killer and can also help prevent other grasses and weeds, including dandelion and clover. It performs its function using the root system as it really attacks the roots of the targeted plants.

What this product does is it penetrates the targeted plants by going through their leaves then moving down to their roots, thereby promoting their complete elimination.

It is also a great herbicide as it is known for its visible weed killing action that works as rapidly as three hours. Any weed, grass, and vegetation it comes in contact with will also be killed while preventing their regrowth for a max of 3 months.

It is because of the protective barrier provided by the product designed in such a way that it can prevent the killed grasses and weeds from emerging again up to that period.

You’ll also be pleased with the fact that it is useful in numerous applications, including your patio, driveway, path, or fence, as well as around established shrubs, plantings, flowerbeds, and ornamental trees. It is also flexible in the sense that you are allowed to use it for edging and trimming landscapes.


  • Capable of killing more than a hundred weed and grass species
  • Highly flexible with its ability to suit a number of areas and applications
  • Kills targeted plants to the roots
  • Guarantees visible weed killing results within just 3 hours
  • Can prevent the regrowth of killed weeds for 3 long months


  • Not ideal for spot weed treatments done in lawns

9. Roundup Grass & Weed Killer Concentrate Plus

You can also invest in Roundup Grass & Weed Killer Concentrates Plus, especially if what you wish to use is a highly effective grass, weed, and crabgrass killer that works really fast. It is a powerful and effective weed killer, which you can safely use in lawns.

What is so great about this product is that it has the ability to kill the toughest grasses and weeds starting from the roots. It is safe and convenient to use in a tank sprayer.

You will also find it safe and easy to use around trees, shrubs, flowers, as well as in the driveway, patio, and gravel area. One major advantage of this product is its ability to give you the results you need within just 12 hours.

You are also assured of its ability to deliver its rain-proofing function within just thirty minutes after you sprayed or applied the product.

Another reason to love this product is that it works by getting absorbed by the stems and leaves of the targeted plants. With that in mind, it can guarantee users that the killing power is incapable of spreading to plants that are not targeted by it.

What’s good about this weed killer is that it provides an effective and economical means of handling large areas. You will also find it simple and easy to prepare and use while delivering the kind of weed control power and capacity that only a reputable brand, like Roundup, can offer.


  • Highly powerful and effective
  • Safe to use on lawns and in other parts of your home
  • Produces results in as little as 12 hours
  • Boasts of its rain-proofing action, which can be expected in just 30 minutes after application
  • It’s killing power does not spread on non-targeted plants


  • No major issues detected

10. Scotts Halts Crabgrass & Grassy Weed Preventer

Another product that is known for its strong and powerful killing action when dealing with weeds and grasses is the Scotts Halts Crabgrass & Grassy Weed Preventer.

One amazing benefit of this product is that it is indeed a solid and powerful weed preventer, which is designed to target crabgrass as well as grassy weeds.

What’s even more remarkable about this product is that it is meant to be applied once only during the early spring but such action can already prevent the growth of crabgrass as well as other grasses and weeds the entire summer season.

It is also possible for you to apply it during the fall in case you wish to kill the mosses and seeds of crabgrass. Rest assured, though, that regardless of the weather and season, you can safely apply it because it is designed to deliver similar results provided you applied it correctly.

It is also one of the best organics weed killers that you can find as it is safe even with pets and children around.

It works for lawns, especially larger ones. In fact, it is capable to treat a really large and wide area, more than 5,000 square feet.

Another reason why many users find this product so remarkable is the fact that various weather conditions, like snow, rain, and freezing conditions, will never hamper its overall performance and results. Applying it is easy via a spreader.


  • A solid and powerful product that deals with crabgrass and other grassy weeds
  • Suitable to be applied on all seasons
  • Safe to use even when pets and kids are around
  • Can treat a wide area
  • Guaranteed to deliver the same level of performance regardless of the weather


  • Not suitable for lawns with bentgrass and dichondra

You might also like: Pet-Friendly Weed Killer: A Ultimate Guide

Strongest Weed Killers 2019 – A Comparison Table

Product Type Use on Size(s) Coverage
Ortho GroundClear Vegetation Killer Concentrate Non-selective systemic Post- & pre-emergent weeds 32-ounce, 1 gallon and 2 gallons 75 square feet
300 square feet
600 square feet
Southern Ag 2,4-D Amine Weed Killer Selective contact Post-emergent weeds 32-ounce 16,000 square feet
Roundup 5107300 Extended Control Grass & Weed Killer Non-selective contact and systemic Post- & pre-emergent weeds 24-ounce 1,500 square feet
Compare-N-Save Concentrate Weed & Grass Killer Non-selective contact and systemic Post-emergent weeds 1 gallon 25,000 square feet
RM43 43% Glyphosate Plus Weed Preventer Selective contact Post-emergent weeds 32-ounce 4,324 square feet
Roundup Grass & Weed Killer Super Concentrate Non-selective contact & systemic Post- and pre-emergent weeds 1 gallon 25,500 square feet
Southern Ag Crossbow Specialty Herbicide Non-selective systemic Post- and pre-emergent weeds 1 quart 22,000 square feet
Spectracide Grass & Weed Killer Concentrate2 Non-selective contact Post-emergent weeds 64-ounce At least 16,000 square feet
Roundup Grass & Weed Killer Concentrate Plus Non-selective contact & systemic Post- and pre-emergent weeds 16-ounce 1,500 square feet
Scotts Halts Crabgrass & Grassy Weed Preventer Selective systemic Pre-emergent weeds 10 lbs. 5,000 square feet


Finding the strongest weed killer is not actually that hard to do. All you have to do is to read recent posts and reviews about the different products that fall into the category of strong weed killers. Also, make it a point to spend time checking the cost-effectiveness of a particular product.

Ensure that you pick one designed for grassy weed species in your garden and reduce the risk of these weeds growing back.

Furthermore, you really have to spend time inspecting and assessing the strength of the formula used in a specific product. The best weed killer guarantees effectiveness in dealing with unwanted weed infestations.

3.7 / 5 ( 44 votes )

More and more, our customers are asking pressing questions about what chemicals go on their lawn. Especially with the recently negative news coverage our industry has seen with the Roundup lawsuit. Our customers worry about their kids, their pets, and the environment—and they want to make sure that the chemicals that go on their law are safe.

Beyond the Roundup lawsuit, university studies are now linking glyphosate to an increased risk of health issues and gene mutation for future generations in lab tests. What does this mean for you and our industry? This conversation is not going anywhere, and homeowners are going to drive the conversation and demand for alternative products.

The good news is, there are already alternatives available including traditional herbicides, low AI, and 100% organic. To make it easy for you, we’ve compiled a list of effective alternatives to glyphosate.


Cheetah® Pro

Fast, effective, non-selective control of tough-to-control grass, sedge, and broadleaf weeds. Cheetah Pro’s novel mode of action works quickly to control undesirable plant vegetation around ornamental trees, shrubs, and potted plants, as well as landscape trim and natural areas.

  • Offers broad-spectrum non-selective weed control
  • Fast, effective, non-selective control of challenging grass, sedge, and broadleaf weeds
  • A reliable solution for managing existing or emerging herbicide resistance issues
  • Less translocation in plants creates sharp boundary markers for golf and sports fields and precise trimming around ornamental
    beds with increased ornamental safety
  • Tank-mix compatible with SureGuard® SC for extended residual control
  • Advanced formulation with a caution signal word
  • *Not all crops labeled for use in California



Fast-acting, hybrid selective herbicide formulated with less active ingredients kills over 60 listed broadleaf weeds. A sustainable choice without sacrificing performance.

  • Fast-acting, weeds show visible injury only hours after application
  • Low environmental impact, uses up to 75% less active ingredients than traditional three-way mix herbicides
  • White emulsion helps identify where product is sprayed and reduce over-spraying and call-backs, ultimately saving time and money
  • No offensive odor and discrete application offer key benefits to applicator, staff and homeowner
  • Full application or spot treatment


Avenger® Organic Weed Killer

Non-selective, post-emergence herbicide that quickly and effectively kills weeds, grasses and broadleaves without causing harm to the environment.

  • Fast acting – visible results in less than 2 hours
  • Highly biodegradable – dissipates quickly
  • Non-toxic and can be used in areas near people, pets and wildlife
  • Works in cool & cloudy conditions (as low as 40º F)
  • Does not stain brick, concrete or pavement
  • Emulsion technology – visually references your spray target
  • Sprayed areas can be planted within hours
  • Controls most weeds, grasses and broadleaves
  • No offensive odor, made from oranges, lemons and other citrus fruits
  • EPA registered & approved

Central is here to help. If you have questions or need other recommendations, contact your local Central rep. We’re always adding new and innovate products to our warehouses to make sure we’re meeting your needs. We stay at the leading edge of the industry and we’re ready to help you grow!

Is there a safe alternative to Roundup?

Update 3/23/15 — Glyphosate, the active ingredient in Roundup, has been classified as a probable carcinogen by the International Agency for Research on Cancer. Details here.

Roundup® is touted as a safe, environmentally friendly and easy to use herbicide. It’s also denounced as a toxic, hazardous chemical. Which is right? Are there any alternatives to using Roundup?

Roundup® is a broad-spectrum herbicide, meaning that it has negative effects on nearly every plant with which it comes in contact. It is used for spot treatment of gardens, lawns, paved areas, and some agricultural crops. Although it is toxic, the active chemical, glyphosate, binds with soil. This means that glyphosate that comes in contact with the ground will not run off into water systems and becomes inactive. The substance also appears to be mostly nontoxic for mammals, including people, who eat food which was near plants treated with Roundup.

However, when glyphosate reaches rivers and streams, it is very toxic to aquatic life. Glyphoste can travel to waterways if it falls on asphalt or blows away on the wind. In addition, glyphosate is not the only chemical in Roundup®, simply the only one considered “active” by the EPA. The EPA only requires herbicide manufacturers to provide proof that the “active” ingredients are safe for the environment, not “inactive” or “other” ingredients. Herbicide manufacturers are not even required to list non-“active” ingredients on their packaging.

Polyethoxylated amine (also referred to as POEA or polyethoxylated tallowamine) is a surfactant, a chemical used to transport glyphosate from the leaves of a plant to the roots in Roundup®. POEA has been shown to be significantly more toxic to aquatic life—including algae, frogs, shrimp, and fish—than glyphosate. POEA is not trapped by soil like glyphosate and stays in the environment longer before degrading, creating an environmental hazard. In addition, recent studies indicate that the POEA in Roundup® may be toxic to human embryos.

Alternative products exist which play the same role as Roundup® in weed management. Acetic acid, fatty acids, and essential oils can all act as herbicides.

Acetic acid, or vinegar, can be sprayed on weeds to “burn down” the plant. When sprayed on plants, it causes chemical burns which eat away at the foliage until there are no leaves remaining. On the downside, any plant the vinegar touches will be affected, so if the spray blows into your garden, it will hurt your vegetables. Also, the vinegar only attacks the leaves. It doesn’t contain a surfactant like POEA to carry it into the roots, so the weeds may grow back within a couple weeks. On the upside, the vinegar will quickly break down in the soil and water, meaning it won’t contaminate your lawn long-term and is safe to use near water or pavement. Acetic acid may even be safe to use in lake sediments against invasive plants, although this application is still being tested.

Certain fatty acids, often in the form of soaps, are presented as safe alternatives to Roundup®. The solutions work like vinegar (and often contain vinegar as an additive) insomuch as they burn the leaves of the plant. Soon after the first application, the soap becomes inactive, so it only works for a very short amount of time, and the weeds may return. The most common fatty acid, pelargonic acid, is considered to have very low toxicity and to be environmentally friendly. However, the other ingredients in commercial herbicides are just as important as the active, so before buying any herbicide, make sure to look at the inert ingredients!

Essential oils—such as clove, peppermint, pine, and citronella oils—have been growing in popularity as herbicides over the last several years. They operate like vinegar and soaps, wherein they burn the foliage, but not the roots unless surfactants are added. Unlike the other two, essential oils often are not fully effective because of the way they are introduced to the plants. A portion of the oil will evaporate away or become inactive in the soil before it has interacted with the plants. Most essential oils are not know to have the severe effects of Roundup® in aquatic ecosystems, but each oil has its own potential harms and benefits, so care should be taken when applying it.

If you are thinking more long-term about your landscape, there are other options for weed control. If the tried-and-true method of pulling weeds by hand just isn’t working for you, but you don’t want to spray chemicals all over your yard, consider rethinking how you maintain your lawn. Adding corn gluten, appropriate plants, or lasagna mulching to your routine can reduce the number of weeds in it and make it easier to maintain.

Corn gluten is a byproduct of producing corn starch. It comes as a dry powder and must be applied to the lawn at least twice a year to be most effective against weeds like dandelions. It does not kill mature plants but will hinder the growth of new ones. So it is safe for gardens and will even add nitrogen to the soil, fertilizing the established plants. Corn gluten is safe for people and pets; it is a common ingredient in dog food. So what’s the downside? If you have hardy, well established weeds, corn gluten won’t do you any good.

The most appropriate plants for your yard are often native to the region. Planting native flowers in a garden or grasses in your lawn can help reduce the number of weeds because they are better able to compete for nutrients, water and light. Or, if you feel your yard is beyond hope and are willing to give up your grass, consider planting native ivy or moss in its place. Or perhaps even a garden!

If you want to start a new garden or tame your current one, consider lasagna mulching. The process involved covering the ground with newspaper, leaves, and other compost ingredients in layers, smothering your weeds and enriching the soil over the course of about six months. For more information on lasagna mulching, visit this page.

If you decide to use alternative chemicals for gardening, here are a few tips to help you out this summer:

  • Try not to buy products which do not list all the “inert” or “other” ingredients on the label. If the company isn’t willing to share its product information, there’s a chance that there is something there you don’t want to see. The EPA provides a list of minimal risk, or list 4A, ingredients approved for pesticide use. Under a previous rating system, the ingredients were classified into risk categories: List 1 indicated high risk, List 2 indicated potential risk, List 3 indicated unknown toxicity, and List 4 indicated minimal toxicity. Lists 1 and 2 can be found on the EPA website for reference.
  • Ask your lawn care provider if they can use natural products instead of Roundup® on the lawn. Many will use Burnout II, which is a clove oil product, or something similar when asked.
  • Always follow the directions on the label. Just because a chemical is natural or organic doesn’t mean it isn’t dangerous. Just like onions and hot peppers can make you cry, acids and oils can cause burns when used incorrectly.
  • Never use an herbicide before it rains unless specifically directed to. Even if the main ingredient doesn’t wash away, other ingredients may!
  • Always read the warning on the label. The EPA has three warning levels: Caution, Warning, and Danger. If a product is labeled Danger—or even Warning—think twice before using it on your lawn or garden.
  • When in doubt, ask an expert. Talk to your local greenhouse, lawncare company, Extension Office, or college horticulture department. Or, to find safety information about a chemical or product, look for the Material Safety Data Sheet (MSDS) online. These can be found for free, and you should never have to sign up to see them. There will be a lot of technical information, but it will also tell you whether the substance will be dangerous to your body or the environment.
  • Use other good-care practices for your lawn. Don’t cut your grass too short, for example.
  • Keep your ears open for any new information on the safety of natural herbicides. Although they have been tested for safety, they have not been examined with as much scrutiny as Roundup®, and should be treated with care.

Related Links:

  • OSU Extension Pesticide User’s Guide
  • National Pesticide Information Center Fact Sheets
  • EPA Reassessment of Inert Ingredients
  • Household Products Database
  • EcoCity Cleveland: Lawn Care
  • Shaker Lakes Nature Center: Laudable Lawn Care


How does Glyphosate work?

Glyphosate works by halting a specific enzyme pathway that only exists in plants and some microorganisms. This in turn prevents plants from producing certain proteins that are needed for growth. Glyphosate is absorbed through foliage and then moves to growing points within the plant. Glyphosate is only active on growing plants and is not effective as a pre-emergence herbicide. It also does not prevent seeds from germinating. Some weeds, such as yellow nutsedge, wild buckwheat, and Asiatic dayflower have become tolerant to Glyphosate and a different herbicide may need to be used in conjunction for maximum effectiveness.

How safe is Glyphosate?

Glyphosate was registered by the EPA in 1974. It has been classified by the organization as toxicity class III on a scale of I-IV, with IV being the least dangerous. Also, it has not been found to be a carcinogen. Glyphosate has low toxicity for fish and other wildlife and biodegrades in soil with a low likelihood of reaching groundwater. Always apply as directed, wearing gloves as it can irritate the skin and eyes. Do not enter sprayed areas for 4 hours.

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