Tow‑behind sprayers make treating large lawns and fields fast and efficient when using the right weed killer. The best products for this application are cost‑effective concentrated formulas designed for broadcast use.
In this guide, we review ten proven weed killers that work perfectly with tow‑behind sprayer equipment .Each option is selected for its effectiveness, coverage rate, spray stability, and turf safety.
Proper mixing and accurate calibration are also important. These weed killer picks ensure you get maximum performance from your tow‑behind sprayer.
From selective broadleaf control to non‑selective total vegetation elimination, we’ve covered the best options. .Read on to find the right herbicide to suit your spray gear and area needs.
Top 10 Weed Killers for Tow‑Behind Sprayer Use
1. Southern Ag Amine 2,4-D Weed Killer
Southern Ag Amine 2,4-D is a concentrated broadleaf herbicide ideal for large areas. Southern Ag Amine 2,4-D mixes easily in sprayer tanks and provides effective control of dandelions, clover, and plantain. A single jug treats up to several acres.
Results appear after 7–10 days and it becomes rainproof in about 6 hours. It blends well with water and other tank additives. Best used in spring or fall when weeds are actively growing.
Accurately calibrate sprayer for proper coverage. Avoid windy days to prevent drift. Wear protective gear and clear pets from area until dry.
2. Hi-Yield 2,4-D Selective Weed Killer
Hi-Yield 2,4-D is a cost-effective concentrate perfect for broadcast use via tow sprayers. Hi-Yield 2,4-D broadleaf control works in warm or cool lawns, clover-infested pastures, and right-of-way. It covers large spaces without frequent refills.
Visible results in 5–10 days; rain resistant after 6 hours. Requires proper dilution in 20–40 gallons of water per acre. Ideal application window is early morning on calm days.
Use gloves and goggles while mixing. Check sprayer nozzles for uniform flow. Keep ready‑to‑use mixture out of direct sun.
3. Compare-N-Save 2,4-D Amine Weed Killer
Compare-N-Save 2,4-D Amine offers a budget-friendly herbicide option for large‑area spraying. Compare-N-Save 2,4-D is effective on broadleaf weeds in fields, lawns, and fence lines. A single gallon treats thousands of square feet.
Rainfast in approximately 6 hours and shows results in 7–10 days. Mix in large tanks for uniform distribution. Best during peak weed growth at 60–85°F.
Follow dilution instructions carefully. Avoid overspray on desirable plants. Store unused mix in airtight containers away from children.
4. Gordon’s Trimec Lawn Weed Killer Concentrate
Gordon’s Trimec concentrate features 2,4-D, dicamba, and MCPP for broadleaf control using tow sprayers. Gordon’s Trimec targets over 200 broadleaf weeds while being safe for turf grasses. It boosts efficiency of large‑area applications.
Results visible in 2–5 days, rainproof in a few hours. Mix in warm water with recommended surfactant. Apply with sprayer calibrated to 40–60 gallons per acre.
Check pH before mixing. Wear protective clothing during use. Clean sprayer thoroughly after application.
5. Spectracide Weed Stop Passthrough Concentrate
Spectracide concentrate mixes into tow sprayer tanks for full‑lawn broadleaf control. Spectracide Weed Stop includes 2,4-D, dicamba, and MCPP for effective weed removal. Suitable for driveways, beds, and lawns all in one go.
Yellowing in 5–7 days; rainproof in 6 hours. Mix per label in high‑volume sprayers. Use during active growth season for best results.
Wear gloves and eyewear when handling. Avoid spraying on windy days. Store concentrate sealed and cool.
6. Monterey LG 5518 2,4-D Weed Killer
Monterey LG 5518 is a lawn and field‑safe 2,4-D concentrate perfect for tank spraying. Monterey LG 5518 delivers strong broadleaf control and good turf safety. It works on plantain, thistle, clover, and more.
Rain-resistant after application and visible effects within a few days. Ideal for larger acreage with pump sprayers. Apply in calm conditions for uniform coverage.
Wash sprayer parts thoroughly after use. Wear PPE during mixing. Store original product out of reach.
7. Tellus 4L Broadleaf Weed Killer
Tellus 4L includes 2,4-D, dicamba, and diflufenzopyr for broad spectrum weed control on large turf areas. Tellus 4L is suited for professional sprayer rigs on large acreages. Provides extended residual control of tough weeds.
Visible control within 7–14 days; rainfast in 4–6 hours. Use with non‑ionic surfactant for best results. Cover big areas quickly and efficiently.
Follow label limits for sensitive species. Calibrate sprayer accurately. Keep away from water sources during mixing.
8. Tordon 22K Herbicide (Commercial Only)
Tordon 22K contains picloram and 2,4-D for deep-rooted weed control with tow sprayers. Tordon 22K is suited for fence rows, field edges, and pasture use—not turf. One gallon covers large, tough infestation areas.
Results appear within 14 days; resistant to rainfall in 2–4 hours. Use biodegradable clay or dye for marking spray lines. Not for use near potable water.
Commercial users only—mixed and applied by licensed applicator. Wear full PPE. Follow specific cleanup regulations.
9. Roundup Victory Plus Liquid Concentrate
Roundup Victory Plus combines glyphosate and imazapyr for long‑term weed control in non‑crop areas. Roundup Victory Plus is ideal for fences, paths, and right‑of‑way maintenance. One tank handles large fields with no‐till coverage.
Kill visible in 3–5 days, rainproof quickly after application. Suitable for pruning and upkeep of non‑turf zones. Use with tow sprayer when maintenance control is needed.
Use caution—non‑selective. Keep people away until spray dries. Clean sprayer immediately to avoid corrosion.
10. RM43 Total Vegetation Control
RM43 is a glyphosate+imazapyr non‑selective herbicide for full vegetation control via sprayer rigs. RM43 Total Vegetation Control is perfect for fence rows, lot clearing, and landscape prep. Results last through seasons.
Dieback in 3–7 days; rainproof in 6–8 hours. Mix precisely in large sprayer tank lines. Works best during growing season.
Wear full PPE and ventilated respirator. Avoid desirable plant areas. Dispose of excess correctly.
Buyer’s Tips for Best Weed Killer for Tow‑Behind Sprayer
- Calibrate your sprayer: Correct pressure and speed ensure even application.
- Use proper nozzles: Choose flat‑fan or cone‑jet tips for broad coverage.
- Include surfactant: Improves spray adhesion on leaf surfaces.
- Operate in calm conditions: Prevent drift to sensitive areas.
- Mix fresh batches: Avoid mixing more than needed for one job.
- Clean equipment after each use: Prevent cross‑contamination of chemicals.
- Watch weather forecasts: Ensure rain‑free window for 6–24 hours after spraying.
Best Weed Killer for Tow‑Behind Sprayer (FAQs)
- Can I use any weed killer in a tow sprayer? Use only concentrated products labeled for broadcast tank application.
- How much herbicide to use? Follow label’s gallons‑per‑acre recommendation for coverage area.
- Will it damage grass? Choose selective formulas safe for turf if spraying lawns.
- Need to add dye? Dye helps with visualization on large areas—check label.
- What nozzles work best? Flat‑fan nozzles give even spray patterns on turf.
- When should I spray? Early morning when winds are under 5 mph is ideal.
- Is a surfactant necessary? Yes, unless already included in product formulation.
Conclusion
Using a tow‑behind sprayer drastically increases efficiency for large‑scale weed control. These ten herbicides are optimized for tank mixing and broadcast application.
Select the formula that matches your area size and desired selectivity for grasses.
Calibrate sprayer properly and follow safety instructions carefully. Achieve weed-free lawns, fields, and borders with professional herbicides and the right equipment.