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5 Best Herbicides for Blackberries

Best Herbicides for Blackberries

Most recommended
BioAdvanced 704655ABioAdvanced 704655A Brush Killer Plus
  • Kills Poison Ivy
  • Ergo-Grip Spraying Technology
  • Adjust spray nozzle

A good choice too
Roundup ConcentrateRoundup Concentrate Poison Ivy Plus Tough Brush Killer, 32 oz.
  • Ideal for Large Areas
  • Economical Way to Treat
  • Kills Weeds to the Root!

A good choice too
Southern AgSouthern Ag CROSSBOW32 Weed & Brush Killer,
  • 1 Quart
  • Ideal for Large Areas
  • 2,4-dichlorophenoxyacetic acid

RM18 Fast-ActingRM18 Fast-Acting Weed & Grass Killer Herbicide, 32-ounce
  • 32-ounce
  • Treats Up To 3K Square Feet
  • No Assembly Required

ITS SupplyITS Supply T-Zone Turf Herbicide - 1 Quart
  • 1 Quart
  • Fast visual response
  • Yellow nutsedge suppression

Choose the Best Herbicides for Blackberries

Customer’s Choice: the Best Rated Herbicides for Blackberries

342 users answered this survey. Please help us improve this review!

61.7% of users selected BioAdvanced 704655A, 19.3% selected Roundup Concentrate, 10.23% selected Southern Ag, 5.26% selected RM18 Fast-Acting and 3.51% selected ITS Supply. Every month we analyze your answers and change our rating.

To kill wild blackberries you may need to use special chemical solutions. Surely, no particular weed killers are aiming only at blackberry bushes but some universal herbicides can be quite helpful.

Why do you need to control wild blackberries?

In some U.S. southeastern regions, there are several briars or Rubus plants (blackberry and dewberry), both plants can be found in Florida. In most pastures in Florida, wild blackberry is popular and can be ignored for long periods. Lack of control though can give rise to thickets that are challenging to manage.

Blackberries are difficult to manage since they are deeply entrenched, creeping perennials, which ensures that new above-ground shoots are produced as the roots develop. The shoots, or canes, are biennial when they occur during the current growing season, accompanied by the next season of flowering and fruiting. Their vast root structure retains huge quantities of energy and in order to stop re-sprouting, must be destroyed altogether.

Controlling their large root system is very difficult, so most herbicides provide only partial control with single applications. In order to maximize herbicide performance, a few precautions should be considered and provided. A selected herbicide should be transported within the plant to the rhizomes and new growing points to effectively control wild blackberries during their growing season.

The following guide will give hints about some of the best herbicides for blackberries control. Compare 5 different products with the help of the table below. The buying guide includes useful tips as well.

BioAdvanced 704655A Brush Killer Plus– the best for the volume!

BioAdvanced 704655A Brush Killer PlusThis brush killer offers the special formula capable of killing the toughest plants from the leaves to the deepest root system. Besides wild blackberry bushes, it may kill bramble, poison oak and ivy, kudzu and over 70 other weeds/plants.

This product is not as pricey as certain other brands on the market. For your money, it is an exceptional value and can be extended very far, which is one of the reasons we suggest it. We also find it very convenient to use, but for most brush killers, it can be assumed. Both of them are pretty clear.

Tips for users: Apply anywhere the tough brush creates. Thorny and toxic weeds after the application that can be hazardous to pick by hand.
  • Remains rainproof and waterproof for a few hours;
  • Kills over 70 different plants and weeds;
  • Large volume;
  • Cost-effective;
  • Kills leaves and roots;
  • The default sprayer is flimsy;

It is quick to refill this weed preventer with concentrate. Holding your lawn in great shape, this concentrated weed killer won’t let you or your garden down.

Roundup Concentrate Poison Ivy Plus Tough Brush Killer – the best for the quick action!

Roundup Concentrate Poison Ivy Plus Tough Brush Killer, 32 oz.Tough Brush Killer destroys all the worst weeds and grasses to the base so they won’t come back. Roundup Focus Poison Ivy Plus Invasive plants and shrubs such as kudzu and wild blackberry are used to suppress ivies and weeds such as poison ivy, poison oak, and poison sumac.

This herbicide, developed with an exclusive recipe, incorporates two brush-killing ingredients to reach the waxy leaves and brush of weeds that are difficult to destroy to kill them down to the core. It is simple and quick to use this formula. It is supplied pre-mixed with an extension wand that enables effective application without bent over, painful reach, or exhaustion of the hand. One container handles up to 400 sq. ft.

It comes condensed, but before adding, you may have to blend it in water, however, you will have enough product for wide areas to be processed or extracted. It also acts on other invasive vines, such as poison oak, wild blackberry, poison sumac, and kudzu.

Tips for users: Spray while the wind is not blowing to keep it from getting on good plants for the best results and carry the requisite protective clothing. Money-back insurance is provided with this product. Roundup will reimburse the money if it doesn’t operate or you’re not happy for any reason.
  • Kills wild blackberries in 24 hours;
  • Large coverage area;
  • Becomes rainproof quickly;
  • Requires a few applications;
This Roundup agent is specially designed to infiltrate the thick waxy leaves of tough plants like wild blackberries, killing plants all the way down to the roots. It’s not going to take long to learn it’s effective. In less than 24 hours, you’ll see the proof.

Southern Ag CROSSBOW 32 Weed & Brush Killer– the best for non-crop pastures!

Southern Ag CROSSBOW32 Weed & Brush KillerWhat’s best about this item is that three high-power components are included: triclopyr, 2,4-dichlorophenoxyacetic acid and butoxyethyl ester.

The good combination of these 3 active ingredients allows it to be successful in destroying weeds as well as certain bushes and trees with this herbicide. For this assassin, those pesky dandelions, toxic ivy trees, and blackberry patches are no match.

Tips for users: Just spray down the whole property and with as little as a week you’ll have progress.
  • Great for spot treatment;
  • Powerful formula;
  • Designed for non-crop pastures;
  • Acts quickly;
  • Strong chemical odor;
  • More than one application is required;

With this Southern Ag Crossbow herbicide, the effects can be observed easily, with certain plants wilting overnight. It takes a week or longer for most to demonstrate noticeable degradation.

RM18 Fast-Acting Weed & Grass Killer Herbicide– the best for the coverage area!

RM18 Fast-Acting Weed & Grass Killer Herbicide, 32-ounceThe RM18 herbicide may treat up to 3000 sq. ft. RM18 is your complete weed control strategy for excessive brush, broadleaf trees and grass when you need fast results with limited planning.

RM18, a mixture of two herbicides, begins to destroy weeds on touch and within 12 hours causes noticeable wilting. There are no access requirements for dogs or persons to spray places until the spray has dried.

Because of its quality and consistent outcomes, most consumers choose this product. For customers searching for a full alternative, it is a perfect option to get rid of the weeds safely and quicker.

You can just define this fast-acting substance as a fantastic multi-purpose weed killer that would do miracles in your home and/or office. You may use it near driveways, roads, patios, garden beds, fields of vegetables, mulch and almost every other landscaped region in between.

  • Visible results appear in 12 hours;
  • Concentrated product;
  • Easy to use;
  • A few applications may be necessary;
  • Doesn’t kill many different weeds;

This is an excellent option for homeowners who are searching for one safe product to destroy all their blackberry bushes with active ingredients such as Glyphosate and Isopropylamine salt.

ITS Supply T-Zone Turf Herbicide– the best for the cool climate!

ITS Supply T-Zone Turf Herbicide - 1 QuartThis T-Zone Turf substance from ITS Supply is really successful at destroying blackberries. It comprises a very quickly working mixture of Triclopyr and Sulfentrazone. In hours, you can see the efficacy of its operation.

Within seven to fourteen days, the weed will begin to die. The main enzyme necessary for the development of chlorophyll can inhibit the ingredient Sulfentrazone.

  • Works effectively in cool/hot weather (below 50F or above 85F);
  • Doesn’t smell;
  • Designed for commercial and residential use;
  • Four active components;
  • Extremely toxic to bees;
  • Need to repeat the treatment every two months;

With signs involving fast leaf and stem curl, spinning, yellowing and browning, T-Zone affects several locations within broadleaf weeds.

The Buyer’s Guide

Active ingredients

Glyphosate, dicamba, dicamba/2,4-D hybrids, and triclopyr are the major herbicides used to treat wild blackberry throughout the growing season. Let’s take a closer look at some of these active components:

  • Glyphosate. When used in a 0.5 to 1.5% solution, glyphosate processed into a 41% active ingredient (a.i.) formulation will have decent to excellent regulation of wild blackberries (i.e., about 0.6 to 2 ounces of product per gallon of water). For successful safety, glyphosate herbicides that have a lower concentration of the active ingredient would need a solution of 1.5 to 3.5% (i.e. between 2 to 4.5 ounces per gallon of water);
  • Triclopyr. This chemical is eligible for industrial usage in either amine or ester formulations through approved applicators. The most powerful formulation of Triclopyr on thimbleberry and the other three wild blackberry varieties is Triclopyr ester (0.75 to 1% solution). For the amine form, absorption of the herbicide into the vegetation is not that strong. Nevertheless, when added to a 1 percent approach, it still offers strong leverage;

Also, keep in mind that the non-selective herbicides, glyphosate and triclopyr, indicate that they can destroy any plant they come into contact with. In order to prevent making the herbicide drift on suitable plants, render the application on a windless day. You may also want to wear safe clothes, herbicides include harmful substances, such as a long-sleeved top and chemical-proof gloves, and protective eyewear.

Application timing

Mid-summer is the time that anyone talks about pasture weed management, as most weeds are aggressively rising. However, if not placed correctly, blackberry regulation can be troublesome.

When blooming or late in the autumn, the Blackberry is most vulnerable to herbicides. This is because, at these moments, the plant is constantly charging energy from each leaf into the plant roots. An herbicide can then penetrate the leaf and be transferred directly to the roots where it is most successful. Blooming, though, is a very short phase that leads to fruiting quickly.

Energy transport is diverted away from the root to the fruit during fruit production. At this point, the application of a herbicide can contribute to the substance remaining in the leaves and buds with very little of it ever making its way down to the root system. In general, a herbicide added to fruiting can induce rapid brown-out of the plants, and re-spouting from the rootstock will normally begin to occur within 2 to 3 months.

The general environmental patterns during blooming are another aspect to be mindful of. Dry weather contributes to the slower growth of the plant. It is normal for the leaf to die until the herbicide can be shipped if herbicides are added during drought. This suggests that most of the applied herbicide is carried with it when the leaf desiccates and falls to the bottom.

In the spring, as mentioned previously, blackberry regulation can be troublesome. When enough soil moisture is present, it is essential that you spray at bloom. If temperatures are dry or plants are fruiting when you are about to spray, it is better to postpone the application until the fall, or it may result in reduced power.

Herbicide labels and concentrations

A variety of chemicals can be licensed for weed control using the same active agent but with different formulas (concentration). For example, glyphosate 360 g/L, glyphosate 450 g/L, can be recorded for use on the same weed. A different implementation rate would provide alternative formulations such as these. Still have the sticker reviewed.

Tips for destroying wild blackberries:

  • For optimum results, most herbicides need a wetting agent. Check the product label closely for detailed guidance on any adjuvants;
  • Many herbicides may cause rivers and wetlands to be destroyed. Until using close rivers and reservoirs, carefully review the herbicide label directions;
  • If mowing has happened, it is best to postpone the application of herbicides by a period of 6 months. This gives enough opportunity for the plant to regrow and return the transfer of energy from leaves to roots;

Video Tutorial: Bayer Advanced Brush Killer Plus | The Home Depot

Final thoughts 

Blackberry is a deep-rooted plant that, despite the best conditions, is challenging to maintain. It is also important that measures be taken to increase the potency of herbicides. Proper timing of the submission and postponed mowing will not promise 100% blackberry regulation, but the chances of performance will be significantly increased. 

In addition, a blackberry patch typically takes many years to be identified as a problem. Therefore, in any specified pasture, it usually requires more than one herbicide treatment to kill blackberry.