Best Brush Killers in 2019 – Top Five Products Review

Are the plants in your garden particularly bereft of nutrients? Are the extra spaces you once admired now enshrouded with thicker shrubs and weeds? If you’ve answered affirmatively to both of these questions, the chances are that you may have already considered using brush killers.

Apart from effectively eliminating these unwanted garden plants, the best brush killers also are the safest and the most environmentally-friendly alternative out there. Today, I am accompanying you to finding the best brush killers in the populated market now in one of my quickest yet humblest buying guides to-date.

I’ve carefully identified five excellent entries below to aid you in choosing the one that best suits your need. Ultimately, I’ve also identified the standout among our contenders which should later conclude this post. Without much dawdling, here are the five best brush killers that are killing it in the market now.

5 Best Brush Killers Today


The Ortho MAX Poison Ivy and Tough Brush Killer is one fantastic killer, literally and figuratively! It is proven to annihilate over 60 types of tougher-than-usual brush and weeds along with poison ivy, poison oak, kudzu, woody plants, stumps, vines, and wild blackberries.

If you have one of those invasive, swarming weeds building up in your porch or garden, then this terminator should do you a mean favor. For faster, more aggressive type of output, you need to add more than the suggested amount of concentrate.

For a much quicker absorption, add a squirt of dishwashing liquid right to the mixture, and this should break down the waxy layer on these leaves. 


  • Size: 32 oz


  • Can kill over 60 kinds of tough brush and weeds
  • Can remove poison ivy, poison oak, kudzu, and wild blackberries
  • Ideal for the more invasive, tougher weeds
  • Annihilates woody plants like stumps, vines
  • Can withstand rain for two hours


  • Needs two or more applications
  • Only works for a couple of weeks
  • Pole is oval-shaped; might not fit in universal standards


This ready-to-use trigger spray from Roundup isn’t touted as the toughest killer in the business for nothing. It has the exclusive formula that combines two brush killing ingredients Glyphosate and Triclopyr that are guaranteed to aid you in your annihilating spree.

The solution is specially formulated to get through waxy leaves of some of the toughest weeds and brush that are known in the world of gardening. If you want a product that penetrates efficiently right to the plants’ roots, this one is worth a look!

The product is especially ideal for those gardens that are catapulted by invasive poison ivy and other undesirable weeds and vegetation. In just a matter of days, these plants are all bound to die and wither away.


  • Size: 32 oz


  • Features patented formula that combines two killing ingredients
  • Specially formulated to get through the waxy leaves of tough weeds and brush
  • Annihilates deep down the roots
  • Ideal for poison ivy
  • Contains glyphosate and triclopyr


  • Doesn’t spray that far
  • Shoddy pump design


Woody plants and brush like blackberries can be a little too burdensome for most. But all of these get removed when you use the Southern Ag Crossbow Specialty Herbicide. The non-selective, post-emergent solution can also aid you in removing annual and aggressive broadleaves while your grasses go unharmed.

In addition, Crossbow provides a solid control of these woody plants and brush; it can also be applied to all types of sprayers — ranging from those hand-held models down to tractor-mounted spray rigs.

Crossbow is also noted for its two-hour rainfast window as soon as you apply the solution. Ultimately, this quite effective offering from the brand is also known for its low volatile weed and brush components.


  • Size: 32 oz


  • Features a low volatile weed and brush herbicide
  • Works on most types of unwanted plants
  • Ideal for annual and aggressive broadleaves
  • Grasses are not harmed during and after the application
  • Can be applied to all types of sprayers
  • Rainproof for two hours


  • Comes with an overpowering smell
  • A bit pricey


Right off the bat, Bayer Advanced 704640 Brush Killer Plus Concentrate doesn’t dawdle when it comes to destroying unwanted plants such as poison ivy, poison oak, kudzu, and other tougher brush problems.

With just a single application, all of these are known to wither away and disappear. Its effective mechanism is likewise fascinating: the herbicide penetrates these plants via the leaves, the green or cut woody shoots, then proceeds to their roots to interfere with the plants’ process.

Bayer’s only entry doesn’t toy with its purpose too. The Plus variants destroy 71 other types of weeds and brush, including some of the toughest brush, roots, and all! The 32-ounce bottle comes with no-mix formula.


  • Size: 32 oz


  • Comes with deeply penetrating formula; destroys tough brush, roots
  • Ideal for kudzu, poison ivy, poison oak, and wild bramble berries
  • Annihilates 71 other types of weeds, brush
  • No-mix formula
  • Contains Triclopyr


  • A bit pricey
  • Needs to be applied way stronger on other plants to get results


If you’re one of those users who wants visible results in no time, then this second entry from Roundup should very well be on top of your list. It promises to provide significant results in 24 hours albeit its rainproof window is only for 30 minutes.

Akin to the first Roundup in our list, this one also includes an exclusive formula that combines two brush-annihilating ingredients and a solution that penetrates right down to the waxy leaves of persistent weeds and brush.

And whenever you feel like the product didn’t deliver or didn’t give your money worth, then you’re in much luck as you can send the company your original proof of purchase so it can refund you the purchase price! Leave it to Roundup when it comes to guaranteeing their customers a satisfaction that is guaranteed.


  • Size: 32 oz


  • Effective results in 24 hours
  • Annihilates weeds right down to their roots
  • Comes with exclusive formula that mixes two brush-killing components
  • Solution is mixed with specially formulated ingredient that penetrates the waxy leaves of persistent brush, weeds
  • Ideal for large areas; economical approach to treat weeds


  • Rainproof is only for 30 minutes
  • Not ideal for smaller areas; solution may come off as too strong

5 Crucial Things to Consider When Buying the Best Brush Killers

Astoundingly, the market now is awash with a variety of options that could sometimes cloud our ability to choose. From the numerous components down to a plethora of brands that each compete just to be best out there, these factors can easily overwhelm you.

As such, it is imperative that you equip yourself with only the crucial considerations when selecting the best brush killer. They are as follows:

#1 Brand

Often, I’m inclined to brush this factor off as I don’t find it reassuring enough. But as they go, these brands have crucial reasons as to why they are being preferred over others. And not just because they are more popular but essentially due to the fact that they actually work!

If you’re more on the confused side and have no time to filter through some of the important components, going for these established names are the safest way to go.

#2 Water Resistance

Your garden is naturally bound to get watered or hosed down. As such, it is important that your brush killer won’t be washed away easily. The applied solution has to be retained so it could penetrate effectively, from the leaves down to the roots.

Luckily, this hallmark feature can be found in virtually all brush killers today. These varieties enable the solution to set in place for some hours; and if you’re particularly looking for products that have more longevity, there are also brush killers that can last for days.

You can check this information via the label, or you can simply ask a personnel from the store with regard that product’s water resistance. Another way to help you in regards to this information is by reading through previous users’ reviews online.

#3 Form

Brush killers are now readily available in two forms: the working solution and the “concentrates” For the uninitiated, the latter is the non-diluted solution that will require you to have it reconstituted before using it.

Meanwhile, the former is the one that is ready-to-use once you take it out from the box. Either way, these forms are both efficient at annihilating unwanted shrubs along with the weeds in your garden. Although, I think it is important to note that the working solutions are pricier than the concentrates.

#4 Safety

Safety has always been paramount especially to products that may or may not contain harmful components. Products like brush killers must be perused more than ever as they may not only harm your garden but may inadvertently affect you in the long run too.

As such, make certain that the product that you choose is safe for you and the environment as well. The safety notes that are inscribed on the product label itself must help you in ascertaining this crucial factor.

Also, ensure that the plants that you’re targeting to remove are right in the list on the label. Sure enough, taking time to read the product description will help you significantly especially when you’re looking for this information.

#5 Efficiency

Probably the most important on our list is the effectiveness of your chosen product; sans this, your purchase is rendered futile. One surest way to verify whether your product is equipped with effectiveness is by reading the included chemicals on the product’s ingredients.

Moreover, these potent ingredients must be approved and highly suggested by experts. Ultimately, these components should be safe for general use.

Another way to check your product’s efficiency is by heading to its user reviews or feedbacks. In these, you will also find some of the products' advantages and noted drawbacks over its closest competition.

Winning Tips on How to Use Brush Killers

Here are some tidbits of information that can help you optimize the use of your brush killers:

  • When you purchase your brush killer at a local store, look for component Triclopyr. This should especially aid you on woody plants. Don’t go for brush killers with Glyphosate if you intend to remove some woody species.
  • Peruse the area when selecting the best application method for a specific situation. Drift is applicable during a particularly windy day; whereas dripping is suitable for desirable plants or even root systems. Meanwhile, go for a runoff when you’re dealing with water.
  • Determine the pattern of growth of the plants that you intend to remove. Some of these may come with root grafts that are connected to others right in the stand. As such, the main plant will be affected negatively if this herbicide is utilized to annihilate the suckers.
  • Before treating, make certain that you sever the roots of these suckering plants.
  • Always arm yourself with protective clothing. Some ingredients from your brush killer may damage your eyes and skin. Also, no children or pets must be present right by these treated plants until the herbicide gets dry.
  • When removing minute amounts of woody brush, ensure that you spray it on the foliage. Also, you should cover the surfaces on foliage as you minimize the drip. More importantly, apply this when the day is calm. To avoid contact with your skin or clothing, you may opt to stand upwind

The Verdict

Its duration of rainproof aside, Roundup Poison Ivy Plus Tough Brush Killer Concentrate is easily the standout among its rivals in our list.

Probably its most hallmark feature comes from its very solution that boasts of two brush-killing components and a special formula that penetrates deep down to the trickiest and hardest-to-reach forms of weeds and brush. And when you factor in its promise to provide results in 24-hours, all other bets are off!

Do you think Roundup Poison Ivy Plus Tough Brush Killer Concentrate deserves our top spot? Do you have more tips to share in regards to using brush killers? If you have anything, please feel free to sound them off in the comment section below! Until then, keep safe!

Dan Harris

Hi. I'm Dan Harris. My wife and I started gardening 5 years ago. Neither one of us had any gardening background but we loved the idea of growing our own organic food. Over the years, our garden has almost doubled in size and I’ve learned a lot from my season’s successes and failures. I’ve been excited to share my own beginning knowledge and special skills with all garden lovers.

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