Top 5 of the Best Weed Killer for Lawns

Managing weeds is a difficult task for homeowners. They can make a well-kept lawn look as if no one is paying attention to it! Weeds can grow everywhere. Owners need one of the best weed killer for lawns to keep weed free, beautiful, green lawn. Even though it may seem like an impossible task, you could have a lawn free of weed in your future!

Weeds can destroy your yard. If they are allowed to grow, they quickly take over an entire lawn or garden. Vegetable gardeners have to stop the spread because they will eventually take over your veggies! The seeds are spread through the air, so make sure that you stop it ahead of time. Weeds have the tendency to find the smallest cracks or littlest places to plant and grow.

Important Features of the Best Weed Killer for Lawns

Weed Killer Spray

Before you make a selection, the features below will help you determine your purchase. Not all weed killer is made the same. Let’s take a look!

Size Yard

The first thing you want to consider, besides the price, is how many yards you can cover with the one bottle of weed killer. If you have a significant amount of property, you want something that will provide you with ample amount of chemicals. You don’t want to run out! The weed killers that come premixed tend to cover smaller amount of yard than the concentrated bottles. Concentrated type will typically give you thousands of square feet rather than a few hundred.

Fast Results

Sometimes, it is ok to wait for results. However, weeds are unsightly, and you will probably want the results to happen quickly. Most weed killers do require more than one application to get the best results. But, many of the popular choices begin to work within hours. Typically by the end of the day, you will notice the effects starting to take place.


It is best if you plan to use weed killer on a dry, sunny, warm day. Mother Nature doesn’t always get the memo, and random rain showers can happen anywhere at any time. If your plans go awry, the weed killer needs to be somewhat waterproof. Some varieties are rainproof for a few hours, giving ample time for the chemicals to seep into the roots. However, some are only waterproof for a few minutes, which isn’t a convenient feature.

Weeds That It Kills

crop spraying in the pineapple fruit field

Depending on each region, you may have different weed problems. Your yard may be the gathering place for all the dandelions (they do make excellent wine). Your yard may look like a field of wild violets. Crabgrass may find every single little crack in your driveway. It is important to read the labels and pick the weed killer meant for your individual issues.

Spot Treatment Friendly

If you plan to just use the weed killer on your driveway, sidewalks and around your patio, it won’t matter if the chemicals kill your grass. If you intend to use it to kill the weeds throughout your yard, picking a brand killing grass also seems silly. Many varieties are grass friendly for spot treating your lawn as necessary. The last thing you want to do is lay grass seed again because you destroyed your front yard with weed killer.

Pet and Human-Friendly

Do you have pets or children running around outside? If so, it is important to know whether they are user-friendly. Most likely, your children or dogs won’t be eating the grass. However, they may be walking or rolling around it or near it. It is best if they stay away from the area for the first few hours. It isn’t wise to use a formula that can kill dogs in your yard if you are a dog owner.

Tips on Buying Weed Killer for Lawns

One of the misconceptions about weed killers is that one product can remove all of the pesky weeds in your lawn. In reality, there are various products made to effectively deal with different weeds.

Likewise, there are other things you should know before buying a weed killer. Here, we’ve compiled several tips on weed killer for lawns to help you purchase the right product.

1. Identify the Weeds

Before buying a weed killer, you first have to check if the weeds in your lawn are actually detrimental to your plants. Some weeds growing on certain sections can be aesthetically pleasing while also invite benefit insects for the plants.

For example, chickweed and dandelions look beautiful in the garden despite being weeds. Likewise, these weeds attract lacewings and ladybug larvae that consume the aphids that can ruin your plants. These beneficial weeds can even attract parasitic wasps to cope with beetles and flies.

2. Get the Weed Killer Concentrate

If you’ve decided to use a chemical spray to get rid of weeds, you should buy the concentrate instead of the mixed variants. A single container of weed killer concentrate can fill up more than 80 gallons of herbicide. Whereas, a mixed variant of the same price can only provide a gallon of chemical spray.

You are the one to mix the concentrate with water, but this will save you a lot of money in the long run. Of course, do take note that using a ridiculous amount of concentrate will not lead to the weed killer being more effective. The right option is to spray once more instead of wasting the concentrate in one go.

Here’s a video showing how to mix the concentrate:

3. Pay Attention to the Instructions

Do not buy a weed killer thinking that you just have to spray them on the weeds with any amount. Check the instructions written on the container and ask the store staff if they can lend you the user manual. Reading up first will allow you to see whether the weed killer is right for the lawn and weeds you have.

Furthermore, reading the instructions will let you see the adequate amount for each application. You can determine how many times you’ll have to buy a weed killer to manage your lawn yearly. While lawn weeds typically die after being sprayed with weed killer, perennial weeds or those with waxy coverings will require more amounts.

Lastly, the user manual will inform you about the efficacy of the weed killer. It might kill the weeds immediately or it might take hours or even days before you see significant results. What matters is that you know how to judge the efficacy of the weed killer you will buy.

Overall, buying a weed killer is not as simple as it seems. Some weeds are beneficial for your lawn, and there are products sold as a concentrate or as a mixture already. Most importantly, read the details so you don’t commit any mistakes.

Top 5 Best Weed Killer For Lawns Reviews

Let’s take a look at some of the best-selling options on the market this year!

Southern AG can be used on certain grasses in lawns and other areas, such as long fence lines, non-crop sites, and around agriculture sites. It is designed to control broadleaf weeds.


  • The weed killer doesn’t kill your grass. Instead, it only performs the intended job.
  • This weed killer is a concentrate. You need to add two to three tablespoons of the chemicals to three to five gallons of water.
  • With this mix, you can cover 1,000 square feet of lawn. You will need a fan-type nozzle to spray low-pressure over the entire area. The 2-4D is the way to go. It packs a serious punch into those annoying, broadleaf weeds! Some even use it for unwanted trees!
  • You will notice a difference within 24 hours, and all weeds should be gone by 7 to 10 days. A few more applications over several days will eliminate every single problem weed in your yard.


  • Always make sure to read the label and use the appropriate amount of chemicals for the size land. Otherwise, you do risk killing your grass.
  • It doesn’t work very well on killing clover intermixed with grass.
  • If you have St. Augustine grass, don’t use this weed killer. It kills this type of grass very easily.

The Southern AG is pet, human and environmentally safe, which is ideal for those with children or animals running around in their yard.

With the Compare N Save Weed Killer, you can kill unwanted grass in a single application. You can use it to keep your driveway and sidewalks free of weeds. It is perfect for along fences, around flower beds, and your vegetable gardens.


  • It comes in three options: 32 ounces, 1 gallon or 2.5 gallons. Each option is 41 percent glyphosate.
  • The one gallon makes up to 85 gallons of ready-to-use spray. You can cover 25,000 square feet of lawn; that is a lot of weed killing!
  • With one application, you will notice results in two to four days.
  • If it happens to rain after you applied the weed killer, the Compare N Save is rainproof for two hours.
  • Gardeners have no trouble using this weed killer. Simply mix three tablespoons of this concentrated in one gallon of water. If you are having harder weed problems, mix five tablespoons into the one gallon of water.
  • One gallon covers 300 square feet of lawn. It is best to apply it during a warm day, above 60 degrees Fahrenheit.


  • It is only waterproof for two hours. Other options offer it for a longer period of time.
  • Some homeowners have to make the concentration stronger than recommended, decreasing the amounts of use out of each gallon.

With the Compare N Save Weed Killer, you get a lot of spray for a great value! It will last you for a long time and will cover a huge amount of area!

Most homeowners know about Ortho Weed B Gon! They created this concentrate to kill dandelions, clovers, chickweed, oxalis, crabgrasses, and broadleaf weeds to the root.


  • It will only target the lawn weeds, and it won’t damage your beautiful, green lawn. You can spray the weeds in your lawn, as a spot treatment, without ending up with bare, ugly patches throughout your yard
  • You can use it at any time during the month when plants are growing.
  • The Weed B Gon kills 250+ weeds, and you will see results within one hour.
  • If a crazy rain shower happens after application, the concentrate is rainproof for one hour!
  • When you purchase the concentrate, you get a great value. The one-gallon variety will cover 64,000 square feet of lawn! You will need a sprayer to go along with it.


  • With the Weed Be Gon, you will probably need to make more than one application to eliminate all of the weeds totally.
  • It is only waterproof for one hour. After that, the chemical could be washed away in the rain.

Roundup Weed and Grass III Killer comes with its comfort wand making it a convenient choice. Homeowners who aren’t satisfied with their Killer III can send proof of purchase and receive a refund for the entire price! However, chances are you will love all the weeds it knocks out of your lawn!


  • It is a no-mix formula, perfect for use anywhere and anytime! You can easily use it around your vegetable garden, flower beds, around trees and more.
  • For the first 10 minutes, it is rainproof.
  • You will notice results within three hours!
  • If you use the Killer III, it knocks out weeds from the roots up, so they won’t come back. The chemicals are absorbed through the leaves, going all the way down for a total kill.
  • You can use this weed killer for 400 square feet of lawn. The wand offers a continuous spray with no bending over and no hand fatigue.


  • It only provides homeowners with 10 minutes of rainproof coverage. This isn’t nearly long enough!
  • Unfortunately, it will also kill your grass with ease. You have to apply carefully.

The Gordon Speed Zone Weed Killer shows results quickly; weeds will start to die within hours of the first use! If you want an effective, concentrated weed killer, Gordon Speed Zone works fast and covers a large amount of land.


  • It is a 2,4-D mixture that rapidly and efficiently controls the weed population.
  • You won’t have any broadleaf weeds left on your lawn within 7 to 10 days.
  • With one 20 ounce bottle of concentrate, you can cover 14,000 to 18,000 square feet of lawn, perfect for those who own a lot of property.
  • You can use the Gordon Speed Zone Weed Killer for spot killing weeds. It won’t harm your lawn grass. It is designed to target weed species in your yard correctly, so there is no worry about having ugly patches of dead grass.
  • Gordon’s works well on dandelions, clovers, creeping Charlie and wild violets.
  • The combination of chemicals could keep the area clear of weeds for up to 1 year.
  • It doesn’t burn your grass. Some weed killer burns grass when they work rapidly, but Gordon’s Weed Killer won’t leave any signs of burn.


  • Given that it is made with 2,4-D, you need to use the prescribed blend for the right amount of land. It could kill your grass if you add too much concentrate.
  • You will need to apply a few applications to completely eliminate all of the weeds in your yard.

Picking the Best Weed Killer for Lawns

​These are five best choices for a weed killer! If weeds are overtaking your yard, it is time to put a stop to the madness. Luckily, there are some great options to make the process easier. Remember to take a look at the important features!

Out of the five choices above, one stands out as the best of the best. The Southern AG 2,4-D has all of the important features we want to see. First, it is environmentally safe, along with human and pet safe. You will cover thousands of square feet with one bottle of concentrate. Southern AG includes broadleaf weeds specifically, such as chickweed and dandelions. However, it won’t hurt your grass, and it doesn’t leave burn marks on your yard.

If the Southern AG doesn’t suit your needs, any of the five weed killers listed above is sure to make your yard weed free and beautiful within a week!

Do you have a favorite weed killer? We would love to know what works the best for you!

About the Author Ann Katelyn

I'm Ann, I have dedicated most of my life in gardening. This is a subject I enjoy the most. Since then, I committed to developing my website to be the best guidance when it comes to taking care of flowers and plants. I am trying my best to be well-versed with plants found in desert areas, tropics or Mediterranean. I still need to be knowledgeable about so many kinds of botanical life.

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