Blackberry bushes are persistent and invasive, often spreading rapidly across yards, fences, and pastures. Choosing the best weed killer for blackberry bushes ensures effective control without harming nearby vegetation. This guide evaluates top-rated herbicides specifically formulated to kill tough brambles and prevent regrowth.
We focus on ingredients like glyphosate, triclopyr, and brush-specific blends for targeted application. Whether you’re treating small patches or acres of overgrowth, selecting the right product is crucial. Each recommendation offers proven performance, ease of use, and long-term suppression of blackberry shoots.
Proper application techniques are also covered for maximum penetration into woody stems. From ready-to-spray bottles to concentrated brush killers, this list meets every need and budget. Say goodbye to stubborn brambles with these powerful solutions.
Top 10 Best Weed Killers for Blackberry Bushes
1. Ortho MAX Poison Ivy & Tough Brush Killer
This powerful formula contains triclopyr to penetrate deep-rooted blackberry bushes. It’s designed for woody plants and brush, making it ideal for bramble control. The ready-to-use version simplifies application without mixing.
It kills to the root and prevents regrowth for weeks. Can be applied directly on leaves and stems for best results. Works within days and full kill is achieved in weeks.
Best for homeowners dealing with scattered or moderate infestations. Easy to apply with trigger sprayer. Works on poison ivy, oak, and blackberries alike.
2. Crossbow Herbicide
Crossbow combines 2,4-D and triclopyr for broad-spectrum brush control. It’s a favorite for pasture and non-crop areas where blackberries thrive. Its low volatility makes it safe for use near trees and grasses.
Mixes easily in sprayers and offers extended coverage per gallon. Kills woody plants to the root while allowing desirable grasses to survive. Shows visible results within 7–14 days.
Excellent for rural, agricultural, and large-area use. Requires dilution before use. Avoid application during rain or windy days.
3. Roundup Concentrate Poison Ivy Plus Tough Brush Killer
This concentrated Roundup formula is glyphosate-based with added brush control ingredients. It’s rainproof within 30 minutes and kills blackberry roots effectively. Comes in various sizes for small or large coverage.
Ideal for mixing in tank sprayers to treat fence lines, yards, or acreage. Penetrates tough stems and woody growth rapidly. Requires careful handling to prevent damage to nearby plants.
Perfect for persistent and mature blackberry clumps. Delivers long-lasting suppression. Not selective—apply with care.
4. Bayer BioAdvanced Brush Killer Plus
This dual-action formula contains triclopyr and penetrates thick stems quickly. Targets over 70 types of invasive brush, including blackberries. Kills down to the roots with extended residual activity.
Available in concentrate and ready-to-use formats. Compatible with backpack or handheld sprayers. Safe around lawns when used as directed.
Effective for heavy infestation zones. Works even in shaded, moist areas. Professional-grade results at a consumer price.
5. Southern Ag Brush Killer
This budget-friendly option is concentrated for flexible use. Contains triclopyr for strong performance against blackberry thickets. Can be used with surfactants to boost penetration and coverage.
Designed for pastures, non-crop areas, and around fences. Works well when mixed with diesel for cut-stump treatments. Begins showing results within a week.
Ideal for rural applications and DIY land clearing. Affordable per-acre cost. Requires careful dilution and mixing.
6. Remedy Ultra Herbicide
This professional-grade brush killer uses triclopyr to control blackberries and other tough shrubs. It offers a low-odor formula that’s effective on woody species. Works well in basal bark or foliar spray treatments.
Can be mixed with oil or water depending on application. Popular in forestry and pasture management. Offers great residual control and long-lasting results.
Great for severe infestations and large properties. Requires PPE when handling. May need repeated applications in dense areas.
7. Compare-N-Save Brush Killer
This economical solution contains 8% triclopyr for targeted control of blackberries. Comes in concentrate form, great for tank mixes. Offers visible results within 1–2 weeks.
Ideal for fence lines, roadside ditches, and perimeter growth. Works on over 50 types of brush. Easy to store and mix on demand.
Popular with property managers and ranchers. Delivers professional results on a budget. Always follow safety guidelines closely.
8. Gordon’s Brush Killer for Large Properties
This is specially formulated for blackberry and other brush on large tracts of land. The 1-gallon concentrate treats up to an acre. Works with ATV or tow-behind sprayers.
Contains triclopyr and provides systemic kill to woody plants. Great for farms, ranches, and unmanaged lots. Safe for use around livestock after drying.
Recommended for scale and affordability. Results take 1–3 weeks. Avoid drift to nearby crops.
9. BioSafe Weed & Grass Killer
This non-selective organic herbicide kills blackberry foliage on contact. It uses fatty acids to burn plant tissue fast. Ideal for eco-conscious users who want fast visual results.
Safe for pets and children after drying. Doesn’t kill roots, so repeated applications may be needed. Best for young or regrowing shoots.
Use for spot-treatment near gardens. OMRI-listed for organic gardening. Not effective for root kill.
10. Spectracide Weed & Grass Killer
This fast-acting weed killer kills blackberry bushes to the root. Rainproof within 15 minutes and visible results appear in hours. Easy-to-use trigger bottle and concentrate options available.
Contains diquat and glyphosate for fast action. Great for driveways, patios, and areas around foundations. Avoid overspray on wanted plants.
Reliable for smaller infestations. Not ideal for heavy brush. Reapplication may be necessary.
Buyers Guide Tips To Consider when Choosing The Best Weed Killer For Blackberry Bushes
1. Identify the Active Ingredient
Always check if the product contains proven brush-killing chemicals like triclopyr or glyphosate. These penetrate woody stems and ensure root kill. Products without these may only suppress foliage temporarily.
2. Choose Based on Application Area
Consider the size and accessibility of the area being treated. Large acreages may benefit from tow-behind sprayers with concentrated formulas. Smaller yards may need ready-to-use or handheld options.
3. Consider Selectivity
Some weed killers are non-selective and will kill all vegetation they touch. If you want to preserve grass or nearby plants, look for selective brush killers that target only woody weeds like blackberry bushes.
4. Check Rainfast Time
Weather plays a big role in herbicide effectiveness. Products that are rainproof within 15–30 minutes ensure performance even if the weather changes. Always apply on a dry day with no rain forecast.
5. Review Safety and Environmental Impact
Look for eco-friendly or OMRI-listed products if safety around pets, kids, or water sources is a concern. Organic weed killers offer safer options but may require more frequent reapplication for full control.
6. Determine Ease of Use
Some formulas come ready-to-use with built-in sprayers, while others need dilution and spraying tools. Pick one that matches your experience level and equipment availability. Simpler solutions save time and effort.
7. Evaluate Cost vs. Coverage
Compare the cost per gallon and how much area it treats. Some concentrates seem expensive but treat several acres when diluted. Balancing price and efficiency helps manage your budget effectively.
7 FAQs About Blackberry Bush Weed Killers
1. What ingredients work best for blackberries?
Triclopyr and glyphosate are most effective. These penetrate woody stems and kill roots. Avoid weak general weed killers.
2. How do I apply herbicide on thick blackberry growth?
Use a sprayer for foliar coverage. Apply to full leaf coverage for best results. Reapply if growth continues.
3. Should I cut bushes before spraying?
Yes, cutting encourages regrowth with tender leaves. Then apply weed killer when new shoots emerge. This ensures better absorption.
4. Are multiple applications needed?
Yes, especially for older or larger infestations. Repeat every few weeks as needed. Consistency is key.
5. Can I kill blackberries organically?
Yes, but organic options like fatty acid sprays require persistence. They don’t kill roots. Repeated use is necessary.
6. Is spraying harmful to nearby grass?
Some herbicides are selective and won’t hurt grass. Read the label. Non-selective formulas will kill all plants.
7. When is the best time to spray?
Late summer or early fall when blackberries are actively growing. Avoid rain and wind. Apply during warm, dry days.
Conclusion
Blackberry bushes can take over quickly if left unchecked. The best weed killers for blackberry bushes ensure fast kill, deep root penetration, and long-lasting results. Products like Crossbow and Ortho MAX deliver excellent control in large and small spaces alike.
Choosing the right formula—whether chemical or organic—depends on your land, safety preferences, and the severity of the infestation. Always follow label instructions and wear protective gear for safe use. Apply consistently and you’ll eliminate blackberries over time.
Don’t let blackberries dominate your landscape. Pick the right weed killer and restore control of your property. Persistent treatment with proven products makes all the difference.