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Specs are compiled from manufacturer listings and verified buyer reviews and can change over time — please confirm the key details on the product page before buying.
Trying to clear poison ivy, blackberry bushes, or stubborn woody vines with a basic lawn weed killer is like using a squirt gun on a bonfire — you need a chemistry that matches the job. Brush and weed killers use specific active ingredients (triclopyr, 2,4-D, dicamba, or MCPA) that penetrate tough bark and kill the root system, so the plant does not just wilt and regrow the next season.
I’m Min — the founder and writer behind Gadgets Feed. This guide is built by comparing the manufacturers’ published specifications and the patterns across verified customer reviews, so you get each pick’s real strengths and trade-offs instead of marketing spin.
Whether you are clearing fence lines, reclaiming pasture, or killing invasive vines around your yard, the right brush and weed killer depends on the plant type, the area size, and how fast you want visible results.
Quick Picks
- Roundup Pro Herbicide Industrial Weed Control — Top Performer
- Bonide 332 Poison Ivy & Brush Killer — Best Value
- Southern Ag Crossbow Specialty Herbicide, 128 oz — Premium Pick
- Remedy Specialty Herbicide Weed Killer, 1 Gallon — Professional Grade
- Pro Brush & Poison Ivy Killer — Smart Value
- Southern AG 01113 Brush Weed Killer — Compact Choice
- ALLIGARE Triclopyr 3 Herbicide, 2.5 Gal — Large Scale
How To Choose The Best Brush And Weed Killer
Here is what actually matters when you stand in front of a shelf (or a cart page) full of brown jugs.
Active ingredients tell the real story
Triclopyr is the heavy hitter for woody brush and vines — it moves through the leaves into the root system. 2,4-D adds broadleaf weed control. Many premium formulas combine both so you get one pass that kills poison ivy, blackberry, and annual weeds without needing two products.
Coverage area vs concentrate size
A 32-ounce bottle of concentrate can treat different square footage depending on the mix ratio. The Southern AG bottle covers 512-1024 square feet per gallon mixed, while the Roundup Pro covers 435,600 square feet. Match the jug size to the property — an entry-level quart is fine for a suburban fence line; a 2.5-gallon jug suits acreage or industrial sites.
Form: ready-to-spray vs concentrate vs undiluted stump treatment
Most brush killers here are concentrates you mix with water in a tank or hose-end sprayer. Some products (like the Bonide) work undiluted on freshly cut stumps with a paintbrush — no sprayer needed. Think about whether you are spraying large areas or spot-treating individual stumps.
Selectivity: will it kill my grass?
Products like the Bonide list safe use on bluegrass, fescue, rye, bent, Bermuda, Bahia, and Zoysia lawns when applied at the correct rate. Others (like the Roundup Pro) are non-selective — they kill any green plant they touch. Read the label for the full list of safe turf types.
Quick Comparison
| Model | Best For | Active Ingredients | Liquid Volume | Coverage | Amazon |
|---|---|---|---|---|---|
| Southern AG 01113 | Small brush & stumps | triclopyr | 32 oz | 512-1024 sq ft/gal | $20.89$22.99Amazon |
| Pro Brush & Poison Ivy Killer | Woody plants & broadleaf | triclopyr + 2,4-D | 32 oz | 2-4 pints/acre | $39.99Amazon |
| Bonide 332 | 240+ weed types + stumps | MCPA + triclopyr + dicamba | 128 oz | over 240 types of weeds | $55.55Amazon |
| Roundup Pro Herbicide | Large acreage & industrial | herbicide | 320 oz | 435,600 sq ft | $86.95Amazon |
| Southern Ag Crossbow | Unwanted trees & brush | Garlon + 2,4-D | 128 oz | 2.23 acres | $89.95Amazon |
| Remedy Specialty Herbicide | Pasture & fence line | triclopyr | 128 oz | selective brush & trees | $98.22Amazon |
| ALLIGARE Triclopyr 3 | Wetlands & industrial sites | triclopyr | 320 oz | broad-spectrum | $105.99Amazon |
In‑Depth Reviews
1. Roundup Pro Herbicide Industrial Weed Control, 2.5 Gal
The industrial-grade concentrate that covers a massive 435,600 square feet — ten football fields worth of weed control from one jug.
You get 320 fluid ounces of water-soluble concentrate that you dilute based on a percentage-of-volume basis. The active ingredient works by inhibiting an enzyme found only in plants and microorganisms, so you see results on most annual weeds within 2-4 days and most perennial weeds in 7 or more days after application. It is labeled for industrial, turf, ornamental, forestry, roadside, utility rights-of-way, and railroad management sites.
Buyers report that after three days all the weeds were dead, and one reviewer called it “the most potent mix I have found” — even killing a Cottonwood root under a driveway. Weighing 20 pounds, this is a serious jug for serious acreage. Just note it does not provide residual weed control, so weed seeds in soil will continue to germinate after application.
The big numbers
- 435,600 square feet coverage — leads the list by a huge margin
- 320 oz concentrate versus 32 oz for the Southern AG quart
- Visible on annual weeds within 2-4 days
The fine print
- Non-selective — kills any green plant it touches
- No residual control — weed seeds in soil continue to germinate
- At 20 pounds, this is a heavy jug to haul
Reach for this if: you manage acreage, fence lines, or industrial sites and want the widest coverage from a single purchase.
Look elsewhere if: you only need to spot-treat a few stumps or a suburban yard — the concentrate volume is oversized for small jobs.
2. Bonide 332 Poison Ivy & Brush Killer Concentrate, 128 oz
A three-ingredient formula (MCPA, triclopyr, and dicamba) that kills over 240 weed types and works as a stump killer straight from the bottle.
Pouring out to 128 fluid ounces, this concentrate targets brush, woody weeds, vines, poison ivy, poison oak, kudzu, wild blackberries, and over 240 other tough weeds. It also double-duties as a tree stump killer — apply the undiluted product directly to a freshly cut stump with a paintbrush. When used as directed, it kills broadleaf weeds in lawns without harming bluegrass, fescue, rye, bent, Bermuda, Bahia, and Zoysia grasses.
One reviewer noted, “It killed an intrusive THICK Vine that’s been choking out the fence.” Another noted the 13.72% MCPA, 1.56% triclopyr, and 1.35% dicamba make it “extremely potent” — the same reviewer stressed wearing full protection including an N-95 and gloves. At 8.6 pounds and a liquid volume of 128 oz versus 32 oz for the Southern AG quart, this is a strong mid-yard option.
Why it stands out
- Kills over 240 listed weed types
- Safe on 8 major lawn grass types when used correctly
- Undiluted stump-killer application — no sprayer needed
Watch for
- Can damage lawn if overspray drifts — one buyer “ruined a spot of land”
- Some tough brush may need 2-3 treatments
- Strong chemical — wear N-95, gloves, and full protection
Best suited for: homeowners with mixed brush, vines, and broadleaf weeds who want one product that sprays and paints onto stumps.
Not ideal if: you need to treat huge acreage — the coverage statement is in “types of weeds” not square footage, so estimate your area yourself.
3. Southern Ag Crossbow Specialty Herbicide, 128 oz
A dual-active formula (Garlon and 2,4-D) that makes up to 96 gallons of spray solution and covers 2.23 acres from a single gallon jug.
Southern Ag built Crossbow for control of unwanted trees, brush, and annual and perennial broadleaf weeds. The 128-ounce jug mixes to 96 gallons of spray — enough for 2.23 acres. One reviewer who had ivy, vines, 8-foot-tall weeds, and small trees called it a decisive winner: “I won this battle!” Another noted its short half-life of 3 days in soil makes it a safer alternative around gardens compared to some competitors.
Buyers that have used it for years describe it as “super effective” and “the best weed killer I have ever used.” Unlike the Roundup Pro, Crossbow is selective when applied at the right rate, so you can target brush without nuking every blade of grass — though you still need to avoid drift.
What earns the spot
- 2.23 acres coverage from one gallon
- Makes up to 96 gallons of mixed spray
- Short 3-day half-life in soil
Trade-offs
- Higher cost than the Southern AG quart or Bonide
- Solutions at 1% can take near a week to show results
- Half-life is longer in water — avoid applying within 3 days of rain
Grab this for: pasture, fence lines, and large brushy areas where you need acre-level coverage from a single bottle.
skip it if: you only have a small yard or just a few saplings — the Southern AG quart will deliver similar chemistry at a lower volume.
4. Remedy Specialty Herbicide Weed Killer, 1 Gallon
A low-odor triclopyr herbicide that works on the entire plant — roots and top growth — ideal for pasture restoration and fence line maintenance.
Remedy Ultra is a specialty herbicide from Dow AgroSciences that targets brush and mid-size trees while being labeled safe to use around children and pets when applied according to the product label. It works both on the roots and the top growth, making it effective against stubborn re-sprouters like honey locust, multiflora rose, and yucca plants. One buyer mentioned it “absolutely annihilated my cogon grass problem” in Florida, while another uses a basal mix of 1 part Remedy with 3 parts diesel on invasive locust thorns.
It is not an organic product — one reviewer called it “heavy-duty herbicide” that needs careful application and a dry period before kids or pets go back out. The 128-ounce gallon is priced higher than the Southern AG quart but the same volume as the Bonide and Crossbow. Owners mention it is “pricey but lasts for 100 weekly lawns.”
The real strengths
- Low-odor formula — less harsh than some alternatives
- Works on the full plant system (roots + top growth)
- Flexible basal bark and stump treatment options
Honest caveats
- Higher price point — “expensive” according to buyers
- Not organic — “requires careful application”
- Some brush takes a couple of weeks to fully die
Ideal for: pasture owners, rural property managers, and anyone fighting invasive woody species like locust, multiflora rose, or cogon grass.
Consider another: if you need a selective lawn-safe broadleaf killer — Remedy is more focused on rangeland and fence lines than turf.
5. Pro Brush & Poison Ivy Killer – 32oz (Compare to Crossroad)
A dual-active concentrate (triclopyr + 2,4-D) in a compact 32-ounce quart — customers note one bottle yields two treatments.
This post-emergent herbicide from Liquid Harvest targets woody plants, brush, and annual/perennial broadleaf weeds. Mix 1.3-5.3 ounces per gallon of water or 2-4 pints per acre. The dual active ingredients (triclopyr and 2,4-D) give you effective control in both cool and warm weather, and you can apply in-season or during dormant periods. One owner reported that Russian olive trees, lilac bushes, and wild roses died after treatment.
Reviewers point out that plants droop within hours and fully yellow or brown in weeks. Since it weighs only 2.5 pounds, it is easy to carry around your property — noticeably lighter than the 20-pound Roundup Pro jug. The 32-ounce size is comparable to the Southern AG quart but adds 2,4-D to triclopyr for broader weed coverage.
Why it works
- Two active ingredients (triclopyr + 2,4-D) for cool and warm weather
- Drooping visible in hours according to buyers
- Light 2.5 pounds — easy to carry
Things to know
- One bottle yields only two treatments per buyer reports
- Highly toxic — “be careful where you use it and dont get it on you”
- Some brush may need a third treatment
Reach for it: when you want a compact, dual-active brush killer for medium-sized jobs — poison ivy, lilac, wild roses, and Russian olive trees.
Pass if: you need to treat a full acre or more — the 32-ounce size runs out fast compared to the 128 oz options above.
6. Southern AG 01113 Brush Weed Killer, 1 Quart (32 oz)
A triclopyr-only quart that buyers call “just as good as Crossbow” for blackberry bushes and cherry trees — and ships where Crossbow cannot.
This 32-ounce Southern Ag formula uses triclopyr as its single active ingredient and covers 512-1024 square feet per gallon when mixed. One buyer in Oregon said, “By the end of the 1st day the leaves were wilting on the blackberry bushes and cherry trees.” Another noted it works well on weeds that had grown through weed block and rock, while a third mentioned it did nothing to strangler fig — so the target plant matters. It is labeled for non-crop areas like roadside, rangeland, pastures, and fences.
Compared to the Pro Brush & Poison Ivy Killer above, this Southern AG quart uses only triclopyr (no 2,4-D) so it is more targeted to woody brush but narrower on broadleaf weeds. The 32-ounce bottle is the same size as the Pro pick but at a lower unit price, making it a budget-friendly entry point for small brush jobs.
What you get
- Works on blackberry and cherry trees — leaves wilting same day per buyers
- Easy to use — just mix and spray
- Prevents sprouting on clean-cut stumps
Its limits
- Only triclopyr — no 2,4-D so narrower weed spectrum
- Coverage of 512-1024 sq ft per gallon is modest
- Does nothing on strangler fig per one review
Best for: targeted small-area brush control — blackberry bushes, cherry trees, and general fence-line weeds on a budget.
Skip if: you need broad-spectrum weed control across many plant types or large acreage.
7. ALLIGARE Triclopyr 3 Herbicide, 2.5 Gal
A triclopyr 3 concentrate in a 2.5-gallon jug designed for professional vegetation management in forests, wetlands, and industrial sites.
With 320 fluid ounces and a weight of 26 pounds, this is the heaviest jug in the list. Mix 1-3 gallons per 100 gallons of spray solution to control broadleaf weeds, vines, and woody plants. It is year-round applicable and tank-mix compatible with other herbicides for custom solutions. One buyer calls it “the best price around” and says it works on woody invasives like locust stumps and autumn olive trees. Another in Oregon uses it effectively on gorse but warns overspray severely damaged nearby trees.
Unlike the Roundup Pro which is non-selective, this triclopyr formula is selective for woody plants — one customer observed “it doesn’t harm the soil or any greenery around the plants I’m trying to get rid of.” The 2.5-gallon volume matches the Roundup Pro, making it a direct competitor for large-scale brush control at industrial and forest sites.
Key advantages
- Selective for woody plants — does not harm soil per buyers
- Year-round application flexibility
- Tank-mix compatible for custom solutions
Serious cautions
- At 26 pounds, it is heavy to move
- Overspray can severely damage trees
- Not available in all states — check state list before ordering
Who it fits: landowners, forest managers, and industrial site crews who need selective brush control at scale without sterilizing the soil.
Who should pass: homeowners with small yards — the 2.5-gallon volume is oversized and heavy.
Understanding the Specs
Triclopyr vs 2,4-D vs MCPA vs Dicamba
Triclopyr is the main ingredient for woody brush and vines — it penetrates bark and travels to the root system. 2,4-D adds broadleaf weed control and works well in cool weather. MCPA targets tough annual and perennial broadleaf weeds. Dicamba adds root-kill power. Products that combine two or three of these give you broader coverage in one pass than a single-active product.
Concentrate volume and coverage
32-ounce (quart) bottles suit small-to-medium jobs like a fence line or a patch of poison ivy. 128-ounce (gallon) bottles handle acre-level brush. 320-ounce (2.5 gallon) jugs are for industrial or large-property use. Read the label mix ratio — some concentrates make 96 gallons of spray, others make less.
FAQ
Will triclopyr-based brush killers kill my grass?
How fast do brush and weed killers start working?
Can I use these products on stumps?
Is one bottle enough for an acre of brush?
What is the difference between triclopyr and glyphosate for brush?
Do these products need a surfactant?
Are these brush killers safe for pets after drying?
Can I tank-mix triclopyr with other herbicides?
Final Thoughts: The Verdict
If you want one dependable pick, the best brush and weed killer is the Roundup Pro Herbicide because its 435,600 square feet of coverage and 320-fluid-ounce jug give you the most value per gallon for serious brush work. If you want a selective formula that kills over 240 weed types and also works as a stump killer, grab the Bonide 332. And for compact, targeted jobs around the fence line, the Southern AG 01113 gives you triclopyr power without overbuying concentrate you will not use.
How We Picked
We do not accept paid placement. Every pick is matched to a real buyer and a real use-case; we do not hands-on test units.
Sources & Methodology
Specifications: manufacturer listings and product documentation. Review insights: verified customer reviews, as of July 2026. Pricing: not shown on this page (it changes often); check the current price via the retailer link.
As an Amazon Associate, Gadgets Feed earns from qualifying purchases. This does not affect which products we feature.
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