Best Herbicide For Grassy Weeds for Lawns and Turf

#1 · Best Overall

1. BASF Drive XLR8

• Weight: 4.2 lb
• Form: Liquid

Best for: Rainfast crabgrass concentrate.

Why it ranks #1: Quinclorac targets post-emergent crabgrass and grassy weeds; the product lists up to 30 days of residual control and rainfastness in less than an hour.

A water-based quinclorac formulation gives BASF Drive XLR8 a specific edge for post-emergent lawn treatment: the product claims faster plant uptake and rainfastness in less than an hour. Its liquid concentrate also offers up to 30 days of residual control, helping reduce how often treated turf needs another application.

The water-based formulation is described as supporting faster uptake, which suits buyers treating actively growing weeds rather than preventing germination. Its residual control lasts up to 30 days, and rainfastness in less than an hour can make application timing less vulnerable to a passing shower. This is a 64-ounce liquid concentrate, so the buyer mixes it for use rather than applying ready-to-spread granules; follow the product label for directions and precautions.

Skip it if you need a pre-emergent granule to stop germination; Scotts Halts is labeled for seasonal prevention.

Choose Drive XLR8 if you want a post-emergent liquid for grassy and broadleaf weeds in turf, with residual control after treatment. It is a concentrate, so account for mixing and follow its label rather than expecting a ready-to-use spray.

Listed on Amazon as: BASF Drive XLR8 Crabgrass Killer for Lawn & Turf, Post Emergent Grassy & Broadleaf Weed Control, Active Ingredient Quinclorac, 30 Day Residual, Herbicide, Concentrate 64 Ounce

#2 · Pre- and Post-Emergent

2. Syngenta Tenacity

• Weight: 8 oz
• Form: Liquid

Best for: Dual-timing selective turf herbicide.

Why it ranks #2: Mesotrione 40% provides selective pre- and post-emergence control in turf, with listed targets including crabgrass, foxtail, goosegrass, and barnyardgrass.

Tenacity combines pre-emergence and post-emergence activity with 40% mesotrione, giving turf owners two weed-control timing options in one herbicide. Its listed targets include large and smooth crabgrass, foxtail, goosegrass, and other broadleaf weeds, with selective contact and residual control stated for turfgrasses.

Used pre-emergence, Tenacity is absorbed by weeds as they emerge from soil; its post-emergence use adds a second timing option for the listed turf weed targets. Mesotrione is specified at 40%, and the product is described as providing selective contact and residual control in turfgrasses. That combination may suit buyers coordinating prevention and treatment, but the supplied facts do not identify compatible turf varieties or application rates. Consult the label for those details before use.

Skip it if you need a listed turf compatibility range; Liquid Harvest Mesotrione names several suitable grass types.

Tenacity suits turf owners seeking both pre- and post-emergent control of listed weeds such as crabgrass. Its mesotrione formulation is clearly specified, but check the label for compatible grass varieties and application directions before choosing it.

Listed on Amazon as: Tenacity Turf Herbicide – 8 ounces (Packaging may vary)

#3 · Warm-Season Turf

3. Envu Celsius WG

• Weight: 18.14 g
• Form: Powder

Best for: Warm-season post-emergent control.

Why it ranks #3: This post-emergent product combines three active ingredients and is described for broad weed control, including grasses, in warm-season turf types.

Celsius WG combines three active ingredients in a post-emergent foliar herbicide, giving warm-season turf owners broad-spectrum control in a compact easy-mix packet. The supplied description says it controls more than 120 annual and perennial broadleaf weeds and grasses, with named turf examples including St. Augustinegrass and Bermudagrass.

The foliar, post-emergent approach is aimed at weeds already growing, while three active ingredients support the stated broad spectrum of control. Celsius WG is identified for warm-season turf types, including St. Augustinegrass and Bermudagrass, so its fit is narrower than a general-purpose weed killer. The powder comes as an easy-mix packet with a product label, supporting measured preparation before treatment. Check the label for the specific turf and application directions; the supplied details do not give an application rate.

Skip it if you maintain cool-season turf such as Kentucky bluegrass; Liquid Harvest Mesotrione lists it as suitable.

Celsius WG is a candidate for buyers treating weeds in warm-season lawns, particularly St. Augustinegrass or Bermudagrass. Its packet is easy-mix, but confirm the exact turf and use directions on the label before application.

Listed on Amazon as: Prime Source Celsius WG – 0.226 oz Easy Mix Packet-Post Emerge Weed Control

#4 · Concentrated Quinclorac

4. Liquid Harvest Quinclorac

• Weight: 2 lb
• Form: Liquid

Best for: Quinclorac turf treatment.

Why it ranks #4: The selective post-emergent concentrate contains 18.92% quinclorac and is specified for crabgrass and many types of residential and non-residential turf.

With 18.92% quinclorac, Liquid Harvest Pro Crabgrass gives buyers a clearly specified active-ingredient concentration for post-emergent crabgrass and grassy-weed treatment. Its description identifies it as selective and suitable for many types of residential and non-residential turf, while residual control is intended to help limit weeds returning.

The selective, post-emergent use means this liquid targets weeds after they appear, rather than serving solely as a pre-emergent barrier. Its 18.92% quinclorac concentration is stated on the product information, giving buyers a defined formulation to compare when choosing a concentrate. The 32-ounce size is a liquid format for application according to its label. Residual control is also claimed, which may help extend the interval before weeds reappear; use only as directed for the intended turf.

Skip it if you require a stated rainfast interval; BASF Drive XLR8 specifies rainfastness in less than an hour.

Liquid Harvest Pro Crabgrass suits buyers seeking a quinclorac post-emergent option for crabgrass and other weeds in turf. Its selective use and residual-control claim are relevant, but follow the label for application details and turf suitability.

Listed on Amazon as: Pro Crabgrass & Grassy Weed Killer – 18.92% Quinclorac (Compare to Drive XLR8) – Concentrated Professional Crabgrass Herbicide – Quick Drying with Residual Control – 32 Ounces

#5

5. Liquid Harvest Mesotrione

• Weight: 8 oz
• Form: Liquid

Best for: Mesotrione for listed turf.

Why it ranks #5: Mesotrione targets listed grassy weeds including barnyard grass and crabgrass; it suits several turf types, though full weed death may take two to three weeks.

Liquid Harvest Mesotrione names 46 broadleaf species and grasses among its targets, including crabgrass, and lists several compatible turf types. It works as a pre- and post-emergent herbicide, but full weed death may take two to three weeks and activation requires water.

The product lists Kentucky bluegrass, centipede grass, buffalo grass, and tall fescue among its suitable turf types, helping buyers assess lawn fit before choosing this concentrate. Its pre- and post-emergent positioning can address weeds at different stages, while the listed 46 targets include crabgrass and broadleaf weeds. Water is needed for activation; if rainfall does not occur within 10 days, the supplied directions call for applying 0.15 inches of water. Expect a two-to-three-week period for full weed death.

Skip it if you need a stated 30-day residual-control claim; BASF Drive XLR8 specifies up to 30 days.

Consider Liquid Harvest Mesotrione if your turf appears among its listed types and you can accommodate its water-activation requirement. It targets crabgrass and many other weeds, but full weed death can take two to three weeks.

Listed on Amazon as: Liquid Harvest Mesotrione – 8oz – Mesotrione Concentrate (Compare to Tenacity) – Pre and Post-Emergent Weed Killer for Lawn and Turf Grasses

#6 · Season-Long Prevention

6. Scotts Halts

• Weight: 9.6 lb
• Form: Granule

Best for: Seasonal granular prevention.

Why it ranks #6: Granules prevent crabgrass and listed grassy weeds from germinating; one spring application is described as providing all-season prevention on established lawns.

One spring application is promoted to prevent crabgrass all season, making Scotts Halts a prevention-first choice for established lawns. Its granules also support fall use against winter weeds such as poa annua, henbit, and chickweed, giving buyers two seasonal application windows rather than a treatment aimed at weeds already growing.

Apply the granules in spring to prevent listed weeds including crabgrass, foxtail, barnyardgrass, fall panicum, goosegrass, and oxalis; a fall application addresses winter weeds and moss. The granular format suits lawn coverage without mixing a liquid concentrate. Rain, snow, or freezing weather after application is stated not to affect performance. Use is limited to established grass: the label cautions against newly seeded lawns and sets waiting periods for new seed or sprigs.

Skip it if you need to kill visible, established weeds now; BASF Drive XLR8 is a post-emergent treatment.

Scotts Halts fits owners of established lawns planning spring or fall prevention, especially where crabgrass or winter weeds are the concern. It prevents germination rather than eliminating existing weeds, and its restrictions matter when seeding or sprigging.

Listed on Amazon as: Scotts Halts Crabgrass & Grassy Weed Preventer, 10.06 lbs.

#7

7. The Andersons Barricade

• Weight: 18 lb
• Form: Granule

Best for: Spring and fall pre-emergent.

Why it ranks #7: Prodiamine pre-emergent granules prevent crabgrass, poa annua, and goosegrass, but do not eliminate existing weeds and require timely spring or fall application.

The Andersons Barricade uses dispersible granule technology that breaks into thousands of micro-particles when watered, moving weed control into the soil. This granular pre-emergent is intended for early spring and fall prevention, including crabgrass and poa annua, not for eliminating weeds already growing.

Barricade's prodiamine-based granules are meant to prevent grassy and broadleaf weeds before they emerge, making application timing central to its use. The DG technology disperses into micro-particles on contact with water, helping move the product into soil. Coverage is listed up to 5,800 square feet, which helps buyers plan treatment for the area at hand. Apply only in early spring and fall as directed; existing weeds need a different approach because this product will not eliminate them.

Skip it if you need to kill weeds already visible; BASF Drive XLR8 is a post-emergent treatment.

Barricade fits lawn owners planning timed prevention in early spring or fall, especially against crabgrass and poa annua. Its granular format needs watering to disperse, and it will not solve an existing weed infestation.

Listed on Amazon as: The Andersons Barricade Professional-Grade Granular Pre-Emergent Weed Control – Covers up to 5,800 sq ft (18 lb)

#8

8. Hi-Yield Killzall

• Weight: 10 lb
• Form: Liquid

Best for: Large-area non-lawn clearing.

Why it ranks #8: This concentrate controls grasses and covers up to 25,600 square feet per gallon, but its label says not to use it on lawns.

A one-gallon concentrate can cover up to 25,600 square feet, making Hi-Yield Killzall suited to buyers treating broad areas rather than small lawn patches. Its double-surfactant formulation dries on plants quickly, while its stated targets include grasses, broadleaf weeds, and woody brush species.

The broad coverage claim makes this concentrate practical for large treatment areas, but application requires a spraying accessory, which buyers need to provide. Its double-surfactant formulation dries on plants fast and starts working quickly according to the supplied features. This is not a lawn herbicide: the product information explicitly says not to use it on lawns. Keep that boundary in mind when choosing between clearing unwanted growth and selectively treating weeds among turfgrass.

Skip it if you need selective weed control within turf; Liquid Harvest Pro Crabgrass is labeled for turf applications.

Pick Killzall for broad-area control of grasses, broadleaf weeds, or woody brush where lawn preservation is not the goal. The concentrate requires a spraying accessory, and its explicit no-lawn direction makes it a poor fit for treating weeds within a lawn.

Listed on Amazon as: Hi-Yield (33693) Super Concentrate Killzall Weed & Grass Killer, 1 gal

#9

9. Spectracide Weed & Grass Killer

• Weight: 12.3 lb
• Form: Spray

Best for: Wand-equipped spot spraying.

Why it ranks #9: The nonselective spray kills weeds and grasses around hardscape and landscape areas; its AccuShot sprayer has an extendable wand for targeted application.

Spectracide pairs a continuous-power AccuShot sprayer with an extendable wand, enabling targeted application without relying on a separate spray accessory. The ready spray is intended for weeds and grasses in listed areas such as driveways, walkways, and around fences, trees, shrubs, and flower beds.

The extendable wand supports more precise aiming around listed landscape features, while continuous power lets the user spray without repeatedly operating a basic trigger. Spectracide says it kills weeds to the root and produces visible results as fast as three hours. It is rainfast after 15 minutes, a useful window when watering or showers are a concern. This is a non-selective weed-and-grass product for listed areas, not a selective treatment within desirable lawn grass.

Skip it if you want selective control in turf; Liquid Harvest Pro Crabgrass is a post-emergent turf herbicide.

Choose Spectracide for spot treatment along hardscapes and around listed landscape plants, where the wand can help direct spray. Its grass-killing action makes it unsuitable for selectively removing grassy weeds from desirable lawn turf.

Listed on Amazon as: Spectracide Weed & Grass Killer with AccuShot Power Sprayer, 1.33 Gal

#10

10. Roundup Weed & Grass Killer

• Form: Liquid

Best for: Comfort-wand landscape spraying.

Why it ranks #10: This product kills grasses and weeds to the root in listed landscape areas, making it unsuitable for selectively treating grassy weeds within a lawn.

Roundup Weed & Grass Killer4 includes a Comfort Wand and claims root kill on tough weeds and grasses, enabling directed treatment around landscape features. It is rainproof in as fast as 30 minutes and can show visible results within hours, with planting permitted one to 30 days after application according to the booklet.

The Comfort Wand supports directed spraying around flower beds, perennial landscape plants, trees, shrubs, patios, and walkways. Root-kill claims cover crabgrass along with weeds such as dandelion, clover, and poison ivy, but this is a weed-and-grass killer rather than selective turf control. Rainproofing in as fast as 30 minutes can reduce weather-related disruption. Planting timing ranges from one to 30 days after application, so check the booklet for the applicable interval before replanting.

Skip it if you need selective control within a lawn; BASF Drive XLR8 is a post-emergent turf herbicide.

Roundup suits buyers clearing weeds around hardscapes, trees, shrubs, or flower beds with a wand-equipped spray. Its grass-killing action is a boundary for lawn use, and the planting interval depends on booklet directions.

Listed on Amazon as: Roundup Weed & Grass Killer4 with Comfort Wand, 1.33 gal.