When searching for best blackberry killers, it might be helpful to have some background on blackberries. Blackberries were known for a long time as being a wild plant, and there was no historical that mention blackberry bushes for gardening. The people of Greece used the blackberry as a remedy for Gout. The leaves of blackberry are used as tea by the Roman to treat various illnesses.
Wild blackberries, however, are considered weeds and can infest yards and even streams and ditches. Blackberries able to regenerate from the rhizomes or the crown following herbicide treatment, burning, or mowing.
This means that wild blackberries are difficult to control. It often requires follow-up treatment. Some people combine mechanical and chemical control methods followed by a prescribed burn to dispose of vegetative material.
In this article, we have selected the top-rated Blackberry killers. We discover the selection from the positive reviews about Blackberry killers from the verified customers. Read all the comparisons, pros, cons, specifications, ratings, our favorites, and reviews of these Blackberry killers and you can make a buying decision soon.
Our editors research, and recommend the best products; you can learn more about our review process here. Bestgardenoutdoor earns a commission through the affiliate links at no additional cost to you.
Best Blackberry Killer in 2022
Gordon’s Blackberry Brush Killer For Large Property
Product review highlights
It has active ingredients of 2,4-D amine, Triclopyr amine, and dicamba. It is a concentrated formula that is very effective to control blackberries, especially for large properties. Furthermore, it penetrates the plant through cut surfaces, woody stems, and leaves. After that, it moves through the vascular system of the plant. You can see the visual result in about 1 to 3 weeks. It can be applied for broadcast and spot treatment of broadleaf weeds. Commonly broadcast in pastures and lawns. Spot treatments of brush, woody plants, and vines.
This Gordon’s BrushKiller is a blackberry killer or herbicide that can control brush and kills weeds such as blackberry, kudzu, mesquite, poison ivy, poison oak, poison sumac, thistle, kudzu, and multi-flora rose. You can use the herbicide for use of spot treatment, including along fence rows and property lines. If you are using a spray solution for the application, it can make up to 64 gallons. We rate this product as the best for a large property.
Southern Ag Brush Killer
Product review highlights
This herbicide is formulated to control unwanted broadleaf weed, vines, and woody plants. It is also a blackberry killer. They can be found around your home, trail, fences, walkways, cabins, and buildings. Including blackberry, cherry, wild rose, wild grapes, and raspberry. We rate this product as the best around the building.
If you want to use a tank sprayer, mix 4 to 8 ounces or 8 to 16 tablespoons with 1 gallon of water. The best result would be to apply full spray when weeds and brush in a growing phase and leafed out.
The result should come out within 1 to 6 weeks after the application. You should wait when the air is calm and without strong wind to have maximum application. If the rainfall within 24 hours, the effectiveness would be eliminated.
Bonide Products Brush Killer BK-32
Product review highlights
This herbicide can control more than 240 tough weeds including wild blackberry, poison ivy, poison oak, and kudzu. The effectiveness including killing broadleaf weeds in lawns and garden to their root and will not kill grasses. We rate this product as the best for lawn and garden.
The right direction would be 3.2 fluid ounces use in 2.5 gallons of water. It can cover 1.000 square feet of lawn or garden. You should not mow the lawn or garden 1-2 days before and after the application and should be applied on wet ground.
You should apply the spraying during the growing phase of weeds or brush. You should have your thermometer to measure the temperature and when applying should be at under 90 degrees Fahrenheit.
VPG Fertilome Brush Stump Killer
Product review highlights
This herbicide is an effective blackberry killer that contains the ingredient of Triclopyr that can control brush such as blackberry, weeds, wood plants, vines & poison ivy. It can be applied around your home, cabins, buildings, trails, and fences to get rid of unwanted plants. We rate this product as the best for stump treatment.
You can start the application by mixing 8 to 16 tablespoons of the herbicide per 1 gallon of water. After mixing, you can use the mix for 500 square feet.
It can control many plants including wild lettuce, ragweed, dandelion, henbit, burdock, oxalis, spurge, smartweed, blackberry, black gum, box elder, California rose, cherry, oaks, hazel, elm elderberry, and locust.
Roundup QuikPro
Product review highlights
This herbicide has glysophate (73%) and Diquat (2.9%) ingredients. It will absorb directly into the weed for maximum results. With the addition of surfactant in the ingredient, this will provide faster results. It is a water-soluble granule so it does not need to have surfactant addition. We rate this product as the best for maximum results.
With this combination, it controls woody brushes like blackberry, broadleaf, grass weeds, and trees or roots. After application, you can see the effect within 1 to 2 days. The foliage will turn yellow. Further, the plant parts will turn to brown color. The herbicide will not take effect if the weather is cold or cloudy.
Be sure not to apply this herbicide when the rain is expected to fall. Rainfall will eliminate and wash off the herbicide from the foliage.
Crossbow Herbicide
This is a herbicide that can eliminate brushes such as blackberry and woody plants as well as annual and perennial broadleaf. It will kill those plants but will not harm grasses. You can apply this herbicide using all types of sprayers. You can use tow behind sprayer or even hand-held sprayer models.
It contains 2,4 Dichloeophenoxtacetic acid triclopyr BEE, 3,5,6-trichloro-2-phridinyloxyacetic acid. It can be applied in rangeland, grass, fence rows, roadsides, and non-crop areas.
You can apply 1 1/3 – 5 1/3 oz. per gallon of water or 1 – 4 gallons per 100 gallons of water. You can kill these plants including Amaranth, Buttercup, Chickweed, Clover, Dandelion, Henbit, Ivy, Kudzu, Mustard, Oxalis, Pigweed, Plantain, Purslane, Ragweed, Ragwort, Spurge (thyme-leaf), Sunflower, Thistle, Wild Carrot and others.
Roundup Poison Ivy Plus Tough Brush Killer Concentrate
This brush killer product combines two brush-killing ingredients to kill the toughest brush, weeds, and grasses. It comes with a guarantee that it will kill weeds to the root. You can apply this product 30 minutes before rainfall. You do not have to wait for days or weeks, because the result can be visible within 24 hours after the application. It kills poison ivy, poison oak, poison sumac, kudzu, and wild blackberry.
When you apply, 1 quart of this will cover 1500 square feet at 6 oz/gallon. Use this product on wooded lots and areas where brush and weeds are invading your garden or yard. You can also use it in recreational areas, fields & trails, around buildings, cabins, lodges, campsites, and on wooded or vacant lots.
When weeds or brush are growing, it would be the best time to apply. Apply during dry, warm, and sunny weather. Approximately above 60°F. You should avoid when the air is unstable to prevent it from drifting onto other plants that might damage them. If the rainfall within 30 minutes, it will not eliminate the effectiveness. It would give fast results within one or two days.
How to Choose The Right Blackberry Killer
Is it waterproof?
It is always best to spray blackberry killer on a dry day. See the weather forecast and avoid a potential rainy day. Rain will wash blackberry killer away and lessen its effects. It is good to know that most blackberry killers are rainproof once they dry.
If the blackberry killer product to become rainproof is a bonus. Some blackberry killer products are rainproof within 30 minutes, and some within 24 hours.
How much coverage do you need?
How large the area the herbicide keeps killing blackberry after the application is essential too. Some can cover tom up to 85,000 square feet, and some products can only cover 1,500 square feet. See the description for the coverage area the product can cover.
How fast do you need results?
Different broad spectrum blackberry killer does their work at different rates of time. Some work within 24 hours while others can take up to 20 days to get rid of the blackberry plant. Find the product that is fast-acting to quickly kill the blackberry plant.
Now, lets into the list!
How Do Blackberry Killers Work?
These blackberry killer products contain a wide variety of chemicals. Different products are only effective on different plants. Most blackberry killers are specially designed to kill woody plants, kill stumps, and prevent them from re-growing.
These chemicals are not human and pet-friendly. Blackberry killer chemicals will harm animals and children. They are effective at killing blackberry but must make sure that the application is safe.
When to Use Blackberry Killers?
Most blackberry killers can be used at any time. You should use them on a clear day. Chemicals will simply be washed away when there is rain.
Use the killer when the plant is most active. Most blackberry plants can withstand herbicide in the winter. So, spray the plants in the spring.