That persistent patch of white flowers and scalloped leaves isn’t a sign of a healthy lawn—it’s an invasion. Clover chokes out grass, creates uneven turf, and attracts bees where you don’t want them. The right chemical formula, applied at the correct concentration, is the only reliable way to eliminate it without damaging the surrounding grass.
I’m Rikta — the co-founder and writer behind Lawn Gear Lab. I’ve spent dozens of hours cross-referencing the active ingredients, coverage rates, and application methods of the most popular herbicides on the market, analyzing user reports to find which formulas actually deliver a clover-free lawn.
Before you spray anything on your turf, you need a selective herbicide that targets broadleaf weeds like clover without harming your grass type. This guide breaks down the best options to help you find a clover killer that fits your lawn size, grass species, and desired speed of results.
How To Choose The Best Clover Killer
Not all weed killers are safe for your lawn. Selective herbicides are designed to kill broadleaf weeds like clover while leaving your grass unharmed. Choosing the wrong active ingredient or concentration can either fail to kill the clover or damage your turf. Here are the key factors to consider.
Active Ingredients: The Chemistry That Matters
The primary compounds that work on clover are Dicamba and Triclopyr. Dicamba is strong on clover and dandelions but can vaporize in high heat (over 85°F) and drift onto nearby plants. Triclopyr is excellent for tough broadleaf weeds and oxalis. Mesotrione is a newer option that works both pre- and post-emergently, stopping clover seeds from germinating and killing existing plants by inhibiting photosynthesis. Always verify the active ingredient listed on the front label, not just the brand name on the bottle.
Lawn Grass Compatibility
Cool-season grasses like Kentucky Bluegrass, Tall Fescue, and Perennial Ryegrass generally tolerate most broadleaf herbicides. Warm-season grasses are more reactive. Centipede and St. Augustine grass can be damaged by heavy doses of Dicamba or Triclopyr. Mesotrione is safe on most cool-season grasses, centipede, and dormant Bermuda, but can severely injure active Bermuda, Zoysia, and Bentgrass. Always compare the label’s grass-type list against your own lawn before buying a concentrate.
Concentration and Coverage Area
Ready-to-use products are convenient for small yards and spot spraying, but they cost more per square foot. Concentrate formulas require mixing but treat much larger areas. A 32-ounce concentrate can cover 16,000 square feet—enough for a large suburban lawn. If you have a property over 10,000 square feet, a concentrate will be far more economical. Larger acreage calls for a 1-gallon jug that treats up to 42,000 square feet.
Application Method
Battery-powered wand applicators are precise for spot-treating individual clover patches. Trigger sprayers are best for small gardens. Pump sprayers are required for consistent mixing and coverage with concentrates, especially for large lawns. Hose-end sprayers allow quick coverage of large areas but can be imprecise and prone to over-application.
Weather Conditions and Timing
Herbicides require a temperature window between 45°F and 90°F for the chemicals to absorb properly. Most need at least 6 to 24 hours without rain after application to work effectively. Spraying on a calm, dry day in the early morning when dew is light gives the best results. Avoid applying during a heatwave or drought when the grass is already stressed.
Quick Comparison
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| Model | Category | Best For | Key Spec | Amazon |
|---|---|---|---|---|
| PBI/GORDON Trimec | Concentrate | Hard-to-control weeds | 64,000 sq. ft. coverage | Amazon |
| Bonide Chickweed, Clover & Oxalis Killer | Ready-To-Use | Targeted clover control | Triclopyr + Dicamba blend | Amazon |
| Liquid Harvest Mesotrione | Concentrate | Pre + post-emergent weed control | 8 oz treats 40,000+ sq. ft. | Amazon |
| Spectracide Large Plot Weed Stop | Concentrate | Large lawn coverage | 42,500 sq. ft. per gallon | Amazon |
| BioAdvanced Weed Killer | Concentrate | Broadleaf weed elimination | 16,000 sq. ft. per 32 oz | Amazon |
| Ortho Weed B Gon | RTU Trigger | Quick spot treatments | Results in hours | Amazon |
| Ortho WeedClear with Comfort Wand | RTU Wand | Ease of spot spraying | 10,644 sq. ft. coverage | Amazon |
In‑Depth Reviews
1. PBI/GORDON Trimec Lawn Weed Killer
The PBI/GORDON Trimec concentrate is the go-to choice for landscapers who deal with stubborn, hard-to-control broadleaf weeds. It relies on the Trimec active ingredient blend, specifically formulated for cool-season grasses like Fescue and Kentucky Bluegrass. With coverage of up to 64,000 square feet per gallon, this is built for serious acreage.
Users report that it takes down Creeping Charlie in two to three days and tougher weeds like Virginia Buttonweed within two weeks. The concentration requires careful measurement, and many users find they need to double the recommended dose for heavy infestations. It’s designed for use with a pump or hose-end sprayer, and best results come when temperatures stay below 85°F to prevent vapor drift.
The PBI/GORDON label explicitly restricts use to cool-season turf, so if you have a warm-season lawn, this isn’t the right pick. It’s a no-frills, high-concentration product that rewards precise application with complete weed elimination, but it demands respect for its potency.
What works
- Highest coverage per gallon of any product tested
- Effective on notoriously tough weeds like Creeping Charlie
- Reliable for large properties with cool-season grass
What doesn’t
- Not safe for warm-season grasses like Bermuda or Zoysia
- Application rate may need to be increased for heavy infestations
2. Bonide Chickweed, Clover & Oxalis Killer
Bonide designed this ready-to-use spray specifically for three lawn menaces: chickweed, clover, and oxalis. It combines Triclopyr and Dicamba to tackle these specific weeds without harming the surrounding lawn. A 128-ounce container covers 10,000 square feet—sufficient for a mid-sized yard.
User reports show that clover begins browning within three days of application, and dandelions usually die off after a single spray. The formula is nearly odorless, which is a nice bonus for homeowners sensitive to chemical smells. Many users recommend adding a surfactant to improve adhesion on waxy clover leaves.
One frequent complaint is that the hand sprayer on the bottle doesn’t provide enough pressure for uniform coverage on large lawns. Users who transfer the concentrate to a pump sprayer see far more consistent results. It also has no pre-emergent effect, so it won’t stop new clover seeds from germinating.
What works
- Highly effective on clover and oxalis specifically
- Clear, nearly odorless formula
- Generous coverage for the price point
What doesn’t
- Hand sprayer is weak for large lawns
- Not a pre-emergent—won’t stop seeds from sprouting
3. Liquid Harvest Mesotrione
Liquid Harvest Mesotrione is a concentrated version of the active ingredient used in Tenacity. It works both as a pre-emergent—preventing clover and crabgrass seeds from germinating—and as a post-emergent that kills existing clover by blocking photosynthesis. The bleaching effect is distinct: affected weeds turn white before dying over two to three weeks.
The 8-ounce bottle treats approximately 40,000 square feet when mixed at the standard rate. Users report that it kills clover, wild violet, and crabgrass without damaging centipede grass or cool-season turf. Activation requires watering in if rain doesn’t fall within ten days, which adds an extra step for some users.
A critical caution: Mesotrione can temporarily discolor or stunt actively growing warm-season grasses like Bermuda and Zoysia. It also requires a spray dye indicator and a pump sprayer for even coverage. Overlapping application will kill turf, so precision is mandatory. For users with mixed cool-season lawns, this is one of the most versatile options available.
What works
- Dual action: pre-emergent and post-emergent control
- Safe on centipede and cool-season grasses
- Highly concentrated—covers large areas per bottle
What doesn’t
- Requires water activation within 10 days
- Can bleach and stunt warm-season grass if over-applied
4. Spectracide Large Plot Weed Stop for Lawns
Spectracide Large Plot Weed Stop is designed for speed and scale. It kills more than 200 types of broadleaf weeds, including clover, and is rainproof after just six hours. The one-gallon concentrate treats up to 42,500 square feet of southern grasses or 32,000 square feet of northern grasses—ideal for large properties.
Users consistently note that they see weeds wilting fast after application, often within hours, without damaging their centipede or tall fescue lawns. Easy mixing and broad spray coverage are common compliments. The formula includes a mix of active salts (2,4-D, Dicamba, MCPP-P) that work synergistically on tough weeds.
The trade-off is speed vs. toughness. Some users report that this concentrate is slower on rosette-type weeds and foxtails, sometimes requiring a third application. It also lacks the dual pre-emergent capability of Mesotrione. For straightforward post-emergent clover control on a large property, though, it offers the best coverage-to-cost ratio.
What works
- Massive coverage—up to 42,500 square feet per gallon
- Fast results on most broadleaf weeds
- Rainproof in 6 hours, flexible application window
What doesn’t
- May need repeated applications on tough rosette weeds
- No pre-emergent effect on new clover seeds
5. BioAdvanced Weed Killer for Lawns
BioAdvanced Weed Killer for Lawns delivers mid-range performance at a value-friendly price. The 32-ounce concentrate treats up to 16,000 square feet and kills over 200 broadleaf weeds, including clover and dollar weed. It contains Dicamba and Mecoprop-P, both effective on clover without harming the grass.
Users appreciate that it saves money compared to heavy Weed & Feed applications and kills dollar weed effectively. The concentrate is easy to spray through a hose-end or pump sprayer. Several users noted that adding a generic 13-13-13 fertilizer afterward helps the lawn fill in bare spots faster.
There are downsides. Some users report that it doesn’t fully eliminate harder weeds like nutsedge or aggressive clover patches on the first application. A few reviews mention that it turns Bermuda grass brown temporarily if applied during hot weather. It works best when applied to young, actively growing weeds.
What works
- Effective on dollar weed and standard clover
- Good coverage for medium-sized lawns
- Economical alternative to branded Weed & Feed products
What doesn’t
- Not effective on all weed types in one pass
- May temporarily discolor Bermuda grass in high heat
6. Ortho Weed B Gon Weed Killer
Ortho Weed B Gon is one of the most recognizable names in broadleaf weed control. This 24-ounce ready-to-use trigger spray kills dandelions, clover, and over 250 other listed weeds without harming the lawn. Users consistently report visible wilting within hours of application.
The formula works by killing weeds down to the root, which is essential for preventing clover regrowth. Reviews highlight that it targets clover specifically without damaging the surrounding grass, and many find it effective for spot-treating small patches. It’s a great option for gardeners who only need to treat a few square feet rather than the whole yard.
The most common critique is the small size. The 24-ounce bottle covers only 5,000 square feet, which is inadequate for a full lawn application. It’s strictly a spot-treatment tool. Users with larger infestations will run out quickly and pay a premium per application compared to concentrates.
What works
- Fast results visible within hours
- Selective formula safe for grass
- Convenient trigger sprayer for small patches
What doesn’t
- Small bottle covers only 5,000 square feet
- Cost per square foot is higher than concentrates
7. Ortho WeedClear Lawn Weed Killer with Comfort Wand
Ortho WeedClear with the battery-powered Comfort Wand is designed for the homeowner who wants to spot-treat weeds without bending over or carrying a heavy pump sprayer. The 1.33-gallon container covers approximately 10,644 square feet and kills crabgrass, dandelion, clover, and creeping charlie down to the root.
Users love the ergonomic wand, which delivers precise streams directly onto the weed leaf without waste. The formula is fast-acting and works best on young, actively growing weeds. It’s safe on a wide range of grasses including Bermudagrass, Fescues, Kentucky Bluegrass, and Zoysiagrass. The battery-powered sprayer is intuitive and comfortable for extended use.
There are important limitations. The coverage area is still modest for the volume. A few recent reviews report product quality inconsistency, with some bottles producing no effect on weeds at all. The formula takes up to a month to fully kill tough weeds like thistle, and it does not prevent clover from reseeding. For simple, low-effort spot treatment, it’s hard to beat, but it may require multiple applications for stubborn infestations.
What works
- Ergonomic, battery-powered wand reduces strain
- Wide grass-type compatibility
- Effective on clover and creeping charlie
What doesn’t
- Some batches reported as ineffective
- Slow action on tough weeds like thistle
Hardware & Specs Guide
Active Ingredient Comparison
The effectiveness of a clover killer hinges on its active chemistry. Dicamba targets broadleaf weeds through foliar absorption and can volatilize above 85°F. Triclopyr is a synthetic auxin herbicide that is more stable in heat and better for oxalis and chickweed. Mesotrione is a carotenoid biosynthesis inhibitor that bleaches and kills weeds over two to three weeks. Some products use a tri-blend of 2,4-D, Dicamba, and MCPP-P for broader spectrum control. Always cross-reference the active ingredient against your grass type before purchasing a concentrate.
Coverage Rates and Dilution Ratios
Coverage is directly tied to concentration. Ready-to-use formulas like Ortho Weed B Gon treat 5,000 square feet per bottle. Concentrates extend coverage significantly: a 32-ounce bottle of BioAdvanced treats 16,000 square feet, while a 1-gallon Spectracide jug handles 42,500 square feet. The PBI/GORDON Trimec concentrate pushes to 64,000 square feet per gallon. For acreage over half an acre, a 1-gallon concentrate is the only practical option. For small lawns under 5,000 square feet, a ready-to-use wand or trigger spray may be more convenient.
FAQ
How long does it take for clover killer to show results?
Can I overseed after applying clover killer?
Why does clover keep coming back after spraying?
Is clover killer safe for pets and children?
Final Thoughts: The Verdict
For most gardeners, the clover killer winner is the Bonide Chickweed, Clover & Oxalis Killer because its Triclopyr/Dicamba blend is specifically formulated for clover and oxalis and works reliably without an elaborate mixing process. If you want a dual pre-emergent and post-emergent solution for a large cool-season lawn, grab the Liquid Harvest Mesotrione. And for quick spot treatment of small clover patches, nothing beats the convenience of the Ortho Weed B Gon.