Choosing the best weed killer is essential if you want to benefit from a luscious garden all year round. Aside from helping it remain beautiful, the right weed killer will help your flowers grow more fully.
Unfortunately, today, there are thousands of different types of weed killers to choose from, all of which have a variety of advantages and disadvantages. Before you can purchase the right one, you need to think about what you want to achieve with your weed killer.
For example, some are great if you’re clearing out a whole area that doesn’t have any plants in it yet. These are best known as non-selective weed killers. On the other hand, selective weed killers will kill weeds while leaving your other plants completely intact.
You must consider whether you want a contact or systemic weed killer, as one can kill weeds by making contact with virtually any part of the plant while the other will only enter through the stomata of the plant.
Lastly, you must keep your loved ones and pets in mind when choosing the best weed killer for your home. This is because some weed killers come with harmful chemicals that could affect your family’s health.
With this in mind, you can choose between chemical-based and organic weed killers which use only natural ingredients to fight the weeds in your garden. Whether you’re looking for a chemical-based or organic weed killer, we’re here to help.
This buying guide will highlight five of the best weed killers available today as well as share some information on the top features you should pay attention to when making your final purchase decision.
So, without further ado, let’s get started.
The Best Weed Killers
1. Compare-N-Save Concentrate Grass And Weed Killer
- Rainproof in 2 hours
- Visible results in as little as 2 to 4 days
- Contains 41-percent glyphosate
- Covers over 25,000 square feet
- Makes up to 85 gal. of ready-to-use spray. Note: Packaging may vary
Are you looking for a weed killer that will help keep your outdoor areas clear from weeds while also allowing your plants to bloom to their full potential? If so, the Compare-N-Save Concentrate Grass and Weed Killer is what you’re looking for.
Voted the best weed killer by our experts, the Compare-N-Save Concentrate Grass and Weed Killer kills all unwanted weeds and grass thanks to its active ingredient glyphosate which kills anything in its stride.
Glyphosate is used to kill weeds rather than prevent them. That being said, the chemical allows you to plant new flowers, vegetable, and fruit patches in as little as one day because it does not leave any residual activity. This weed killer contains 41% glyphosate.
Compare-N-Save Concentrate Grass and Weed Killer can be used on driveways and walkways, along fences to keep your property looking tidy, around your flower beds, trees, and shrubs, as well as in and around your fruit and vegetable gardens.
For best results, the weed killer must be applied on warm and sunny days with temperatures over 60 degrees Fahrenheit.
Although it is recommended to use this product when there is no chance of rainfall within 24 hours of application, there are claims that it becomes rainproof within 2 hours of application.
Compare-N-Save Concentrate Grass and Weed Killer kills the plant you are targeting all the way down to its root, meaning that you won’t have to worry about those pesky weeds growing back in your garden.
Because this formula is so concentrated, it is designed to mix easily with water. In fact, the manufacturer recommends using 3 tablespoons of concentrate in 1 gallon of water for all your weed control needs.
This mixture will not only be strong enough to kill your weeds while leaving your flowers, vegetables, and fruits healthy, but also cover up to 300 square feet of landscape.
In fact, a 2.5-gallon bottle covers up to 630,000 square feet and makes up to 210 gallons of ready-to-use spray. You can choose between a 2.5 gallon, 1 gallon, 32-ounce, and 16-ounce container depending on your weeding needs.
Aside from the fact that the Compare-N-Save Concentrate Grass and Weed Killer offers visible results in as little as 2 days, it is also extremely affordable at just under $50 per 2.5-gallon bottle.
With more than 2,400 reviews, more than 80% of which are 4 stars or more, the Compare-N-Save Concentrate Grass and Weed Killer gets our seal of approval as one of the best weed killers available today.
2. RM43 43-Percent Glyphosate Plus Weed Preventer Total Vegetation Control
- Kills weeds and prevents weeds for up to 1 year
- Treats 17,297 square feet
- Ideal for fence rows, gravel paths, sidewalks, driveways, parking areas and around farm buildings and barns
- Apply to locations only where no vegetation is desired
- Can be used for total vegetation control (bare ground) or spot control of brush, vines and weeds
If the two aforementioned products don’t quite meet your needs, we recommend you check out the RM43 43-Percent Glyphosate Plus Weed Preventer Total Vegetation Control.
Aside from the fact this weed killer is designed to kill weeds for up to a year, the product’s active chemical, Glyphosate, helps to remove even perennial weeds. Not only this, it has the ability to reduce the amount of time you spend plowing your soil.
RM43 43-Percent Glyphosate Plus Weed Preventer Total Vegetation Control is the perfect herbicide for treating new fences against weeds while also reducing the number of unwanted weeds and grass on pathways made of a variety of materials including gravel.
This weed killer can also be used on sidewalks, driveways, and parking areas in order to ensure that you can always park your car in your preferred spot around your home. Farmers also use it around farm buildings and barns.
Designed to kill any plant it comes in contact with, the RM43 43-Percent Glyphosate Plus Weed Preventer Total Vegetation Control needs to be applied only to locations where you do not want any vegetation at all.
Best of all, this RM43 weed killer can be used for both total vegetation control in order to maintain bare ground around your home or business or as spot control for unwanted weeds and vines.
It comes in three sizes which include a quarter gallon, 1 gallon, or 2.5 gallons. The quarter gallon bottle can treat more than 4,000 feet, the 1-gallon bottle can treat more than 17,000 feet and the 2.5-gallon bottle can treat in excess of 43,000 feet.
Thanks to the concentrated formula of glyphosate and imazapyr, another non-selective herbicide, you won’t have to deal with reappearing weeds as these chemicals are designed to kill plants all the way down to their roots. The product can even be used to kill trees.
With more than 400 reviews, more than 80% of which are of 4 stars or more, the RM43 43-Percent Glyphosate Plus Weed Preventer Total Vegetation Control is among the highest rated weed killers available at the moment.
Aside from being one of the best commercial weed killers available, it costs a fraction of the price of other models in store at just over $57 for the 1-gallon bottle.
The Best Organic Weed Killers
1. Preen Garden Weed Preventer
- 1 application blocks weeds up to 6 months
- When used as directed Preen Extended Control Weed Preventer can be used around more than 600 perennials, groundcovers, shrubs and trees as listed on the product label
- Applicator scoop included
- Not intended for use on flower seeds, lawns, vegetable gardens, water gardens or other food-producing or edible plants
- Not available for sale in NY
If you would prefer to avoid using chemicals to clear unwanted weeds and grass from your garden, then we recommend you opt for an organic weed killer such as the Preen Garden Weed Preventer.
Available in a variety of sizes, including 5.6 pounds, 13 pounds, 16 pounds, and 31.3 pounds, this Preen organic weed killer uses absolutely no chemicals whatsoever and may be a safer option for both your family and your pets.
This product is a weed preventer rather than a weed killer and is perfect for application as soon as you plant new flowers, vegetables, or fruits in your garden as it can stop weeds growing before they even start for up to 3 months.
In addition to this, it is one of the only products that is selective meaning that it is completely safe to use around more than 200 established flowers, vegetables, shrubs, and trees.
It can be applied during virtually any season, although is not recommended during the winter months. Because Preen prevents weeds rather than killing them, the company recommends you remove existing weeds and add a 3-inch layer of mulch to your garden beds.
Once prepared, all you have to do is add your Preen Garden Weed Preventer on top of your mulch when your ground is dry.
Plus, if you purchase the 16-pound pail, you’ll benefit from a shaker scoop that will allow you to evenly distribute your weed preventer across your garden surface at the right rate.
Once you have distributed the weed preventer, all you have to do is water the granules so that they seep into your soil and mulch over the next 2 days. The granules bond with soil particles and prevent weed seeds from germinating.
Best of all, the Preen Garden Weed Preventer does not build up in the soil or wash away and leach into other grounds, and, it is proven to effectively prevent 27 broadleaf and grassy weeds.
Lastly, this Preen weed preventer is among the best-priced weed control products at just under $40 per 16-gallon pail. It has received 4 and 5-star ratings more than 80% of the time and has our seal of approval as one of the best weed killer on the market today.
2. Green Gobbler 30% Pure Vinegar
- THE ALL-NATURAL ALTERNATIVE — Derived naturally from corn grown in the USA. Use all-natural vinegar for cleaning, deodorizing, gardening, laundry, chrome polishing, grease removal, etc.
- AMAZINGLY MULTI-PURPOSE — Use vinegar in your home and garden. Clean carpet stains, furniture, car seats, chrome, laundry, appliances, etc.
- STRONGER THAN REGULAR WHITE VINEGAR — Use with discretion. Can be used at full strength for tough jobs, or diluted with water to create a gentler formula.
- COMPLETELY PURE FORMULA — Made with corn, which is distilled into corn alcohol (ethanol). The mixture is then fermented and put through a filtration process to create vinegar. Contains no dyes or chemicals.
Runner-up on our list of best weed killers is the Green Gobbler 30% Pure Vinegar because it is completely natural and safe for your garden, home, family, and pets.
While white distilled vinegar is one of the most commonly used types of vinegar in the United States, it can be used for much more than just cooking. In addition to being used as a cooking and cleaning product, this vinegar can be used outdoors to kill weeds.
Made from grain-based ethanol and converted to acetic acid before being diluted to preferred acidity, pure vinegar is actually one of the most organic ways of keeping weeds at bay in your outdoor spaces.
The acetic acid is what kills the weeds and the higher percentage of vinegar the more efficient yours will be to use as a gardening tool. While the type used in most households is about 5%, this Green Gobbler model contains 30% pure vinegar.
With this in mind, it is one of the most potent vinegars available. Aside from being safe, the Green Gobbler 30% Pure Vinegar is earth-friendly and will not kill your favorite plants. It is also extremely affordable, especially compared to other types of chemical-based weed killers.
By using this potent vinegar, you’ll even be able to prevent weeds as long as you know which types of weeds you are dealing with. If targeted before they set seed, annual weeds can be prevented with just a few sprays.
The Green Gobbler 30% Pure Vinegar is best applied when your region is likely to experience a few continuous days of sunshine as you can saturate the leaves of the weeds without the risk of rain washing it off.
This product comes in a choice of a 1 or 4-gallon container depending on the size of your outdoor space. Both these sizes vary in price with the 1-gallon bottle costing just under $23 and the 4-gallon bottle costing just under $90.
With just under 400 reviews, the majority of which have given it a 4-star rating or more because of its versatility, the Green Gobbler 30% Pure Vinegar gets our seal of approval as one of the best organic weed killers available to use.
Features To Pay Attention To When Choosing The Best Weed Killer
Now that you know more about some of the best weed killers on the market today, it is important that you are aware of some of the top features to pay attention to when making your final decision. Here they are:
What Size Do You Need?
When it comes to size, there are two things to consider: the size of your weeds and the size of your weed killer, as in the amount you need for your garden. If you have a larger garden that is not well maintained and has many weeds, you’ll likely need more weed killer.
That being said, you’ll also need to consider the size and the type of weeds you have. The larger, sturdier, and more overgrown your weeds are, the more weed killer you’ll need to get the job done.
What Chemicals Does Your Weed Killer Use?
You should be aware of the chemicals used in your weed killer in order to ensure that you are keeping yourself, your loved ones, and your pets safe.
While research is still underway, there has now been a significant amount of evidence to suggest that some toxic substances in weed killers, specifically glyphosate, could be carcinogenic, a substance capable of causing cancer.
Other chemicals found in household products and gardening products such as weed killers are also said to be endocrine disruptors thus having a negative effect on the reproductive system, growth, and development in both children and adults.
How Safe Your Weed Killer?
In addition to the above, some stronger weed killers could be extremely dangerous if you are exposed to them for too long. Aside from affecting your skin, they could be dangerous if they were to be consumed or if they make contact with your eyes.
Read all the labels on weed killers before purchasing one in order to be fully aware of the risks associated with them.
Do You Want Organic Or Non-Organic Weed Killer?
While some would say that the best weed killers are those that use chemicals, many are now opting for organic types in order to reduce the number of harmful chemicals used in their homes.
Aside from having a less harmful effect on your loved ones, you may find that you are having a more positive impact on the environment as a whole.
The best way to choose between organic and non-organic is to do your research. We suggest you read up on the best ways to kill the specific types of weeds that are bothering you. You may find some techniques that allow you to avoid chemicals altogether.
Do You Want A Weed Killer Or Preventer?
If you have a nice clean garden with no weeds in it, why not opt for a weed preventer instead of a weed killer? Weed preventers stop weeds from growing in the first place while weed killers are great if you’re already struggling to keep unwanted plants at bay.
Do You Need Rainproof Weed Killer?
If you live in a part of the world where it rains nearly all-year-round, consider opting for a weed killer that is rainproof.
Some weed killers that come in the form of granules are not affected by water whatsoever. They soak into the soil right away and just act more quickly even if they are exposed to water of any kind.
Concentrate Or Ready To Spray?
While you can buy ready made spray bottles of weed killers, the most cost-effective way to purchase your herbicide is as a concentrate.
Aside from the fact that you’ll probably save money by using less, you’ll also be able to choose your dosages based on the plants in your garden and the weeds you are trying to kill.
Tank Sprayed Or Not?
My 4 Sons Battery-Powered Backpack Sprayer
- NEVER PUMP AGAIN: Sprays For 6-8 hours on a single battery charge or over 200 gallons of solution so that you can spray all day on a single charge without worrying about pumping. Variable pressure switch that allows for precise flow control from 20-60psi
- VERSATILE BACKPACK SPRAYER that can be used for almost any job from pesticides and herbicides to concrete sealer and deck stains. Any job that requires spraying can be made easier with this backpack
- BOTH STAINLESS STEEL WAND & ACID BLEACH WAND INCLUDED: Meet all your spraying needs with stainless steel adjustable wand and plastic acid bleach wand. Includes plastic squeeze handle with locking mechanism. Large wide mouth lid allows for easy filling with screen filter to keep dirt & debris out of tank. Includes the largest number of nozzles, including cone, fan tip, fog, and variable in brass and plastic
- LONG BATTERY LIFE: The 8AH lead acid battery provides 4X the battery life of other lithium battery sprayers. If needed, battery can be changed quickly. Includes fully-automatic AC charger that completely charges battery in 8 hours. (BATTERY AND CHARGER INCLUDED!)
- 2019 UPGRADES; Triple thick XXL shoulder pads, organizer pockets for wands and accessories, quick change battery compartment, never leak lid, quick release strain relief hose
If the Compare-N-Save product mentioned above doesn’t quite meet your needs, we recommend you check out the My 4 Sons Battery-Powered Backpack Sprayer as it’s bound to make all your weed killing activities that little bit more straightforward.
Designed with a new and improved translucent tank, this My 4 Son model comes with a new quick-change battery door and 8 AH lead acid batteries which provides three times the battery life of other competing lithium batteries on the market today.
Best of all, the batteries can be changed in just a matter of seconds and you’ll be able to pump at least 200 gallons before having to recharge your backpack sprayer. Thanks to the powerful AC charger you can fully recharge your pack in just 8 hours.
The My 4 Sons Battery-Powered Backpack Sprayer comes with a high efficiency 60 PSI pump with adjustable steel and plastic wands included as well as a variety of nozzle attachments such as brass, flat tee jet, fine mist, and double, all of which can withstand bleaches and acids.
It is designed to work perfectly with a huge variety of weed killing solutions including Thomsons Water Seal, Roundup, Mark It Blue, SBora Care, and a variety of other well-known brands. Plus, it features a wide opening for easy refills.
The screen filter stops any dirt or debris from entering the tank and blocking the pump and the on and off switch is accessible even when the backpack is being worn. Best of all, it comes with a battery life indicator which will tell you when your pack needs a recharge.
This backpack is designed with soldered battery terminals instead of screws making it more durable and reliable. Plus, the swaged hose connections allows for fewer parts and a lower chance of leakage.
Aside from the fact that the My 4 Sons Battery-Powered Backpack Sprayer is tested in the United States before being shipped, it has also received 4 and 5-star reviews most of the time from more than 200 customers.
With a spray of up to 30 feet, improved ergonomics, and a variety of adjustable features, we think the My 4 Sons Battery-Powered Backpack Sprayer is among the best weed killers on the market today.
Plus, you can purchase it on Amazon for just under $150 including free shipping straight to your doorstep depending on your location.
There are a huge variety of sprayers you can be used today to make your task easier. Tank sprayers that can be carried on your shoulder or as a backpack are especially good if you are planning on covering a large area with weed killer.
These types of tank sprayers are also great if you are less mobile and find it uncomfortable to bend down to spray weeds with a bottle.
With so many considerations to make, buying the best weed killer can be extremely challenging. The products highlighted above are all great products that will get the job done.
By paying close attention to the features outlined above, you’ll be sure the buy the best weed killer for your individual needs.