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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

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

61.54% of users selected BioAdvanced 704655A, 19.75% selected Roundup Concentrate, 9.77% selected Southern Ag, 5.41% selected RM18 Fast-Acting and 3.53% 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;


What is the best time to spray blackberries?

The best time to spray blackberries is in early spring, before the plants begin to bud. This will give the herbicide time to work its way into the plant’s system and prevent new growth from emerging.

Herbicides are most effective when applied to actively growing plants. For blackberry bushes, this means spraying during the vegetative growth stage, which typically lasts from late April through early June in most parts of the country.

Of course, timing will vary depending on your location and climate. In general, you should start monitoring your blackberry plants for signs of new growth around mid-April, and begin spraying as soon as you see green shoots beginning to emerge.

What are the pros and cons of using herbicides on blackberries?

Herbicides can be an effective way to control blackberry growth, but there are also some drawbacks to using them. Pros of using herbicides include:

  • They can save you time and effort in the long run
  • They can be more effective than manual removal methods
  • They can kill both the roots and the leaves of blackberries

Cons of using herbicides include:

  • They can be harmful to the environment if not used correctly
  • They can be dangerous to humans and animals if ingested or inhaled
  • Some herbicides may not be effective against certain types of blackberries

Are there any organic herbicides that can be used on blackberries?

Yes, there are a few organic herbicides that can be used on blackberries. One option is to use vinegar. You can either buy white vinegar or make your own by diluting apple cider vinegar with water. Another option is to use lemon juice. Both of these options will work to kill the weeds, but they may also damage the plant if not used carefully.

Another organic herbicide that can be used on blackberries is corn gluten meal. This product works by inhibiting the growth of weed seeds. It is safe to use around children and pets, and it will not harm the blackberry plants.

If you are looking for a more natural way to control weeds in your garden, consider using mulch. Mulch is a great way to suppress weeds and it also helps to retain moisture in the soil. There are many different types of mulch that you can use, such as bark chips, straw, or leaves.

How long does Roundup take to work on blackberry?

The length of time it takes for Roundup to work on blackberry plants depends on a few factors, including the type of herbicide you’re using, the size of the plant, and how healthy it is. Generally speaking, Roundup will kill most blackberry plants within two weeks. However, if the plant is very large or has a lot of foliage, it may take longer. Additionally, if the plant is unhealthy or stressed, it may be more susceptible to herbicide damage.

To ensure that your blackberry plants are killed as quickly as possible, make sure to follow the directions on the herbicide label carefully. Apply the herbicide directly to the leaves of the plant, being careful not to get any on your skin or clothing. Once the herbicide has been applied, water it in well so that it can reach the roots of the plant.

If you’re still seeing blackberry plants after two weeks, you may need to reapply the herbicide. Be sure to check the label to see if this is necessary.

How do you spray a blackberry?

The best time to spray blackberries is in early to midsummer, when the plants are actively growing. You’ll need to thoroughly cover the leaves and stems with herbicide, so that it can be absorbed by the plant. Be sure to follow the label directions carefully, as different products will have different application rates.

If you’re dealing with a large blackberry patch, you may want to consider hiring a professional applicator to do the job for you. This will ensure that the herbicide is applied correctly and evenly, giving you the best chance of eradicating the blackberry plants.

How do I permanently remove blackberry bushes?

The best way to remove blackberry bushes is to physically remove them. This can be done by pulling them up by the roots or cutting them down at the base. If you have a lot of blackberry bushes, you may want to consider renting a stump grinder.

If you decide to use herbicides, make sure that you choose one that is specifically designed to kill blackberry bushes. Glyphosate is a popular choice because it is relatively inexpensive and effective. However, glyphosate will also kill anything else that it comes into contact with, so be careful when using it. Another option is triclopyr, which is less likely to damage other plants. Whichever herbicide you choose, be sure to follow the instructions on the label carefully.

Does glyphosate work on blackberries?

Yes, glyphosate herbicide is effective on blackberry plants. This chemical will kill the entire plant, including the roots, so it is important to use it carefully. Glyphosate herbicide is a non-selective herbicide, so it will also kill any other plants that it comes in contact with. Only apply the herbicide to the blackberry bush leaves and avoid contact with any other plants.

If you have blackberries growing in your garden, you may be wondering what the best herbicide for blackberries is. Glyphosate herbicide is one option that can be effective in killing these pesky plants. This chemical will kill the entire plant, including the roots, so it is important to use it carefully. Contact with this non-selective herbicide (glyphosate herbicide) can kill any other nearby plant. Be sure to apply the herbicide directly to the leaves of the blackberry bush and avoid spraying any other plants nearby.

How do I get rid of blackberry brambles?

Cutting blackberry brambles is the most common method of control. However, this only removes the above-ground growth and doesn’t kill the roots, which will resprout. For best results, cut down canes to ground level and then treat the stumps with an herbicide that contains glyphosate. You’ll need to wait until all the leaves have fallen off the plant before applying herbicide to avoid harming other plants nearby.

Another option is to mow over the area regularly, which will eventually exhaust the root system and kill the blackberry brambles. This method takes longer but has the added benefit of providing mulch for your garden beds. Be sure to remove any canes that are left behind after mowing, as they can resprout.

If you have a small area to deal with, you can try solarization. This involves covering the area with clear plastic for several months, which traps in heat and kills anything that’s underneath. Solarization is most effective in summer when there’s lots of sunlight, but it can also work in spring or fall if you have a long enough period of warm weather.

Finally, you can use chemical herbicides to kill blackberry brambles. There are many products on the market that contain different active ingredients, so be sure to read the label carefully to choose one that’s appropriate for your situation. Glyphosate is a popular choice because it’s effective at killing both the leaves and the roots.

Can I burn blackberry bushes?

Yes, you can burn blackberry bushes. However, you need to be very careful when doing this because blackberry bushes are very flammable. Make sure that you have a fire extinguisher on hand and that you are wearing protective clothing before you start the fire. Also, make sure that the area around the bush is clear of any flammable materials.

Once the fire is extinguished, the bush will be killed and you will be able to remove it from your property. This is one of the quickest and most effective ways to get rid of blackberry bushes. However, it is also one of the most dangerous methods so make sure that you take all of the necessary precautions.

Are blackberries sprayed with pesticides?

The simple answer is yes, blackberries are sprayed with pesticides. But the more important question is, what kind of pesticides are used on blackberries? And how do those pesticides affect the environment and human health?

Most commercial blackberry growers use a combination of herbicides, insecticides, and fungicides to produce their crops. Glyphosate, imazapyr, and dicamba are common herbicides used on blackberries. These chemicals are used to kill weeds that compete with the blackberry plants for water and nutrients. Insecticides such as carbaryl and spinosad are used to control pests that can damage the crop. Fungicides such as copper sulfate and mancozeb are applied to prevent diseases that can ruin the blackberry plants.

How deep do blackberry roots grow?

This is an important question to answer when determining what type of herbicide to use on blackberry plants. The roots of blackberry plants can grow up to six feet deep, making it difficult to kill the plant with a shallow-rooted herbicide. Glyphosate is one of the few herbicides that can penetrate the deep root system of blackberry plants.

Another important factor to consider when choosing an herbicide for blackberries is the size of the area you need to treat. If you have a small area infestation, you may be able to get away with using a less expensive spot treatment product like Roundup. However, if you have a large area infestation, you will need to purchase a more expensive broadcast application product like Rodeo.

Is wood ashes good for blackberries?

Wood ashes are sometimes used as a soil amendment for blackberries. They can help to lower the pH of the soil, making it more acidic. However, wood ashes can also contain harmful chemicals, so it’s important to use them sparingly and only on well-established plants.

If you’re thinking about using wood ashes on your blackberry plants, be sure to check with your local extension office first. They can advise you on how much to use and whether or not it’s safe for your particular variety of blackberry plant.

Do blackberries need a lot of water?

No, blackberries don’t need a lot of water. They’re actually quite drought-tolerant. However, they will produce more fruit if they’re watered regularly.

If you live in an area with frequent rains, you probably don’t need to water your blackberry patch at all. But if you live in a dry climate, you’ll want to give your plants a deep watering once or twice a week during the growing season.

Here are a few things to keep in mind when watering blackberries:

  • Water early in the day so the plants have time to dry off before nightfall. This will help prevent diseases like powdery mildew from taking hold.
  • Don’t wet the leaves when you water. Water at the base of the plant, taking care not to get the leaves wet.
  • Avoid overhead watering if possible. The best way to water blackberries is with a soaker hose or drip irrigation system.

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.