5 Best Broadleaf Herbicides for Lawns 2025

Maintaining a pristine lawn is a point of pride for many homeowners, but broadleaf weeds like dandelions, clover, chickweed, and ground ivy can quickly turn a lush green carpet into an unsightly mess. These invaders don’t just detract from your lawn’s aesthetic—they compete with grass for sunlight, water, and nutrients, weakening your turf over time. Fortunately, modern herbicides offer targeted solutions to eliminate broadleaf weeds without harming your grass (when used correctly). In this roundup review, I’ll dive deep into the five best broadleaf herbicides for lawns, assessing their strengths, weaknesses, and real-world performance to help you choose the right product for your needs.

The products under review are:

1. Southern Ag Amine 2,4-D Weed Killer, 32oz – Quart
2. Ortho WeedClear Weed Killer for Lawns Ready-To-Spray (32 oz)
3. Monterey Turflon Ester Specialty Herbicide Concentrate (8 oz)
4. PetraMax Blue Herbicide Lawn Dye (32 oz) (used as an adjunct to enhance herbicide application)
5. Roundup for Lawns (Ready-to-Use, 1.33 gal)

---

Understanding Broadleaf Weeds and Herbicides

Before we explore the products, let’s establish what makes broadleaf weeds unique and why selective herbicides are the go-to solution. Broadleaf weeds are characterized by their wide, flat leaves and net-like vein patterns, distinguishing them from grassy weeds with narrow, blade-like leaves. Common culprits include dandelions (with their telltale yellow flowers and puffball seeds), clover (a nitrogen-fixing nuisance), chickweed (low-growing and prolific), and ground ivy (a creeping menace). These weeds often thrive in lawns with poor health or maintenance, exploiting gaps where grass struggles.

Selective herbicides target broadleaf weeds while sparing grasses, thanks to formulations that disrupt specific growth processes in broadleaf plants. Most rely on synthetic auxins like 2,4-D, which mimic plant hormones, causing uncontrolled growth that kills the weed. Others, like triclopyr (found in Monterey Turflon Ester), tackle tougher weeds by interfering with cell division. The key is applying these products correctly—timing, weather, and concentration all play a role in their success.

Now, let’s examine the contenders and see how they stack up against the broadleaf weed challenge.

---

1. Southern Ag Amine 2,4-D Weed Killer, 32oz – Quart

Overview

Southern Ag Amine 2,4-D Weed Killer is a classic, no-frills herbicide that’s been a staple for lawn care enthusiasts and professionals alike. This 32-ounce quart of concentrate contains 46.3% 2,4-D (dimethylamine salt), a widely used synthetic auxin that targets over 100 broadleaf weed species. It’sdesigned for lawns, pastures, and ornamental turf, offering a cost-effective solution for large areas.

Efficacy

The star of this product is its active ingredient, 2,4-D, which has a proven track record for controlling broadleaf weeds like dandelions, clover, plantains, and thistles. It’s a systemic herbicide, meaning it’s absorbed by the weed’s leaves and translocated to the roots, ensuring a thorough kill. Users report visible wilting within days, with full weed death occurring in one to two weeks, though tougher weeds like ground ivy may require a second application.

One caveat: 2,4-D isn’t a silver bullet for every weed. It’s less effective against grassy weeds like crabgrass and may struggle with deeply rooted perennials unless applied persistently. Still, for the price and coverage, it’s a powerhouse against common broadleaf invaders.

Application

This is a concentrate, so you’ll need to mix it with water (typically 2-3 tablespoons per 3-5 gallons) and apply it with a tank sprayer. The 32-ounce bottle covers 16,000 to 32,000 square feet, depending on your dilution rate and weed density—ideal for large lawns. The low-volatile amine formulation reduces drift risk compared to ester versions, but you’ll still want to apply it on a calm day to avoid harming nearby plants.

Application requires some effort: measuring, mixing, and calibrating your sprayer. It’s not as plug-and-play as ready-to-spray options, but the trade-off is versatility and economy. Timing matters—apply when weeds are young and actively growing, ideally in spring or fall, and avoid temperatures above 85°F to prevent grass stress.

Safety

Southern Ag is safe for most cool- and warm-season grasses (e.g., Kentucky bluegrass, fescue, St. Augustine) when used as directed, but it’s not foolproof. Overapplication or overlap can yellow or brown grass, especially in drought conditions. Wear gloves, long sleeves, and eye protection during mixing and spraying, as 2,4-D can irritate skin and eyes. It’s also toxic to aquatic life, so keep it away from water sources.

Value

At around $20-$25 for a quart, Southern Ag delivers exceptional bang for your buck. A little goes a long way, making it one of the most economical options for large-scale weed control. It’s a favorite among budget-conscious homeowners who don’t mind the DIY mixing process.

Pros

• Highly effective against a wide range of broadleaf weeds
• Covers up to 32,000 sq. ft., perfect for big lawns
• Affordable and concentrated for long-term use
• Low-volatile formula minimizes drift

Cons

• Requires mixing and a sprayer, less convenient
• Slow results on tough perennials
• Not effective against grassy weeds

Verdict

Southern Ag Amine 2,4-D is a reliable workhorse for broadleaf weed control, especially if you’ve got a sprawling lawn and a tight budget. It’s not the fastest or easiest to use, but its potency and coverage make it a top pick for serious weed warriors.

---

2. Ortho WeedClear Weed Killer for Lawns Ready-To-Spray, 32 oz

Overview

Ortho WeedClear Weed Killer for Lawns Ready-To-Spray is a user-friendly option designed for homeowners who want convenience without sacrificing efficacy. This 32-ounce bottle treats up to 16,000 square feet and boasts a selective formula that kills over 250 broadleaf weeds—dandelions, clover, chickweed, and more—while leaving grass unharmed (when used as directed). It’s a pre-mixed solution with a hose-end sprayer, making it a breeze to apply.

Efficacy

Ortho WeedClear combines three active ingredients: 2,4-D (7.59%), mecoprop-p (1.83%), and dicamba (0.84%). This triple-threat approach targets broadleaf weeds at multiple levels, disrupting growth and killing them down to the roots. Users rave about its ability to wipe out dandelions and clover within days, with visible yellowing often starting in hours. It’s particularly effective in northern lawns (e.g., Kentucky bluegrass, fescue, ryegrass) and southern lawns (e.g., Bermudagrass, Zoysia), though it’s not safe for St. Augustine’s Floratam variety.

It’s not perfect—some stubborn weeds like wild violet or oxalis may need a follow-up dose—but for most common broadleaf pests, it delivers fast, reliable results.

Application

Ease of use is where Ortho WeedClear shines. Attach the bottle to your garden hose, turn on the water, and spray. The built-in nozzle dilutes the product as you go, covering up to 16,000 square feet in one session. Start at the farthest point of your lawn and work back to avoid walking through treated areas. Apply when weeds are actively growing and temperatures are between 50°F and 90°F, and avoid windy or rainy days (it’s rainproof in 6 hours).

The downside? You can’t adjust the concentration, so it’s less customizable than concentrates. For spot treatments, it’s overkill—you’re better off with a tank sprayer and a concentrate.

Safety

Ortho emphasizes lawn safety, and when used as directed, it won’t harm most turfgrasses. However, overspraying or applying in hot, dry conditions can stress grass, leading to temporary yellowing. Keep pets and kids off the lawn until it dries (about 24 hours). The product’s chemicals are standard herbicides, so wear protective gear during application to avoid skin or eye contact.

Value

Priced at $15-$20, Ortho WeedClear offers solid value for its convenience and coverage. It’s more expensive per ounce than concentrates, but you’re paying for the time saved on mixing and measuring. For small to medium lawns, it’s a worthwhile investment.

Pros

• Kills over 250 broadleaf weeds quickly
• Super easy hose-end application
• Safe for most grasses when used correctly
• Covers 16,000 sq. ft.

Cons

• Not adjustable for spot treatments
• May require reapplication for tough weeds
• Pricier per use than concentrates

Verdict

Ortho WeedClear Ready-To-Spray is the go-to for busy homeowners who want a hassle-free way to tackle broadleaf weeds. Its speed and simplicity make it a standout, though it’s best suited for widespread infestations rather than precision work.

---

3. Monterey Turflon Ester Specialty Herbicide Concentrate, 8 oz

Overview

Monterey Turflon Ester Specialty Herbicide is a professional-grade concentrate aimed at tougher broadleaf weeds. This 8-ounce bottle contains 61.6% triclopyr, a potent active ingredient that excels where 2,4-D falls short. It’s designed for cool-season grasses like bluegrass, ryegrass, and fescue, covering up to 20,000 square feet when mixed properly.

Efficacy

Triclopyr is the hero here, targeting over 200 broadleaf weeds, including notoriously stubborn ones like wild violet, ground ivy, and oxalis. Unlike 2,4-D, it’s effective against woody plants and perennials, making it a heavy hitter for challenging infestations. Users report weeds browning within a week, with full control in 2-3 weeks. It’s less versatile than 2,4-D for warm-season grasses (e.g., Bermuda, Zoysia), but for cool-season lawns, it’s unmatched.

It’s not a one-size-fits-all solution—grassy weeds are immune, and it’s overkill for mild weed problems—but for persistent broadleaf foes, it’s a game-changer.

Application

Mix 0.5-1 ounce of Turflon Ester with a gallon of water and apply with a tank sprayer. The 8-ounce bottle stretches far, covering 10,000-20,000 square feet depending on dilution. Apply during active weed growth, ideally in cooler weather (below 85°F), to maximize uptake and minimize grass stress. The ester formulation increases volatility, so avoid spraying near ornamentals or on windy days to prevent drift.

It’s more labor-intensive than ready-to-spray options, but the precision pays off for targeted control.

Safety

Turflon Ester is safe for listed cool-season grasses but can damage warm-season varieties or nearby broadleaf plants if misapplied. Triclopyr is moderately toxic, so use gloves, goggles, and long sleeves, and keep pets and kids away until dry. It’s also harmful to aquatic ecosystems—avoid runoff into ponds or streams.

Value

At $30-$40 for 8 ounces, it’s pricier upfront, but the concentrated formula and extensive coverage make it cost-effective for serious weed issues. It’s an investment for those battling tough invaders.

Pros

• Exceptional control of tough weeds
• Covers up to 20,000 sq. ft.
• Professional-grade triclopyr formula
• Long-lasting results

Cons

• Not for warm-season grasses
• Requires careful mixing and application
• Higher cost per bottle

Verdict

Monterey Turflon Ester is the best choice for cool-season lawns plagued by hard-to-kill broadleaf weeds. It’s not cheap or easy, but its power justifies the effort for serious lawn caretakers.

---

4. PetraMax Blue Herbicide Lawn Dye, 32 oz

Overview

PetraMax Blue Herbicide Lawn Dye isn’t a herbicide itself but a super-concentrated marking dye that enhances herbicide applications. This 32-ounce bottle, three times stronger than typical dyes, helps you track where you’ve sprayed, ensuring even coverage and preventing over- or under-application. It’s compatible with any herbicide, including our other picks.

Efficacy

While it doesn’t kill weeds, PetraMax boosts the effectiveness of herbicides by making your work visible. Broadleaf herbicides like 2,4-D or triclopyr often dry clear, leaving you guessing where you’ve treated. PetraMax’s bright blue color marks treated areas, fading over days with sunlight and water. Paired with Southern Ag or Monterey, it ensures you hit every weed without wasting product.

Application

Add 1-2 ounces of dye per gallon of herbicide mix (adjust for desired intensity) and spray as usual. The 32-ounce bottle treats vast areas—up to 64 gallons of solution—making it a one-time buy for most homeowners. It works with tank sprayers or hose-end applicators, though it can stain skin or concrete if spilled (wear gloves!).

Safety

PetraMax is non-toxic to grass, pets, and people once dry, but it’s a dye—spills can temporarily stain surfaces or hands. It’s safe for all lawn types and won’t interfere with herbicide performance.

Value

At $25-$30, it’s a niche product, but its longevity (32 oz lasts years for average lawns) and utility make it a smart add-on. It’s not essential, but it elevates your weed control game.

Pros

• Improves herbicide precision
• Long-lasting concentrate
• Non-toxic and lawn-safe
• Enhances efficiency

Cons

• Not a standalone weed killer
• Can stain if mishandled
• Extra step in application

Verdict

PetraMax Blue Herbicide Lawn Dye is a brilliant companion for any herbicide, especially concentrates like Southern Ag or Monterey. It’s a pro-level tool that ensures you get the most out of your weed-killing efforts.

---

5. Roundup for Lawns (Ready-to-Use, 1.33 gal)

Overview

Roundup for Lawns is a selective herbicide tailored for homeowners, distinct from the non-selective glyphosate-based Roundup. This 1.33-gallon ready-to-use jug with an extendable wand targets over 250 broadleaf weeds, covering up to 5,000 square feet. It’s formulated for both northern and southern grasses, offering broad compatibility.

Efficacy

With active ingredients like MCPA, quinclorac, dicamba, and sulfentrazone, Roundup for Lawns tackles dandelions, clover, chickweed, and even some grassy weeds like crabgrass. It’s fast-acting—users see wilting in hours and death in days—and kills roots to prevent regrowth. It’s not as specialized as Turflon Ester for tough perennials, but its versatility makes it a crowd-pleaser.

Application

The ready-to-use jug with a wand applicator is a dream for spot treatments or small lawns. Point, spray, and move on—no mixing or hoses required. It’s rainproof in 3 hours, but apply on a dry, calm day for best results. The 5,000 sq. ft. coverage is modest compared to concentrates, so it’s less ideal for huge lawns.

Safety

Safe for listed grasses (e.g., bluegrass, fescue, Bermuda) when used as directed, but overspray can harm sensitive plants. Keep pets and kids off until dry (a few hours). Standard herbicide precautions apply—avoid skin contact and inhalation.

Value

At $20-$25 for 1.33 gallons, it’s affordable for small to medium lawns but less economical for large areas compared to concentrates. The convenience justifies the cost for casual users.

Pros

• Fast-acting on 250+ weeds
• Easy wand applicator
• Broad grass compatibility
• Good for small lawns

Cons

• Limited coverage (5,000 sq. ft.)
• Not as potent on tough weeds
• Higher cost per square foot

Verdict

Roundup for Lawns is a solid all-rounder for small lawns or spot treatments. It’s not the strongest or cheapest, but its ease and versatility make it a worthy contender.

---

Comparative Analysis

Product	Active Ingredient	Coverage	Ease of Use	Best For	Cost
Southern Ag 2,4-D	2,4-D	16,000-32,000 sq. ft.	Moderate	Large lawns, budget	$20-$25
Ortho WeedClear RTS	2,4-D, mecoprop, dicamba	16,000 sq. ft.	High	Convenience, medium lawns	$15-$20
Monterey Turflon Ester	Triclopyr	10,000-20,000 sq. ft.	Moderate	Tough weeds, cool-season	$30-$40
PetraMax Blue Dye	N/A (dye)	Varies	High	Precision with any herbicide	$25-$30
Roundup for Lawns	MCPA, quinclorac, etc.	5,000 sq. ft.	High	Small lawns, spot treatment	$20-$25

---

Final Thoughts and Recommendations

Choosing the best broadleaf herbicide depends on your lawn’s size, weed type, and your comfort level with application. Here’s my take:

• Best Overall Value: Southern Ag Amine 2,4-D. Its massive coverage and low cost make it unbeatable for large lawns, though it requires effort.
• Best for Convenience: Ortho WeedClear Ready-To-Spray. Hose it on and forget it—perfect for busy folks with medium lawns.
• Best for Tough Weeds: Monterey Turflon Ester. Triclopyr conquers the hardest broadleaf foes in cool-season lawns.
• Best Add-On: PetraMax Blue Herbicide Lawn Dye. Pair it with any concentrate for pro-level precision.
• Best for Small Lawns: Roundup for Lawns. Quick, easy, and effective for modest spaces.

Each product shines in its niche, so assess your lawn’s needs—weed severity, grass type, and area—and pick accordingly. Whichever you choose, apply carefully, time it right (spring or fall, active growth), and enjoy a weed-free lawn by summer’s end.