Best Post Emergent For Crabgrass: Compare 9 Lawn Treatments

#1 · Best Overall

1. BASF Drive XLR8

• Weight: 4.2 lb
• Form: Liquid

Best for: Rainfast concentrate for established turf.

Why it ranks #1: This quinclorac concentrate is explicitly post-emergent and lists up to 30 days of residual control plus rainfastness in less than an hour.

A water-based quinclorac concentrate that becomes rainfast in less than an hour gives BASF Drive XLR8 a practical edge when weather may interrupt a lawn-care schedule. Its listed uses include post-emergent grassy and broadleaf weed control, making it a fit for buyers addressing crabgrass alongside other weeds.

The water-based formulation is described as supporting faster plant uptake, so the product’s stated quick-uptake benefit is relevant when treating actively growing weeds. Up to 30 days of residual control may also reduce how often buyers need to plan applications. Drive XLR8 is a liquid concentrate rather than a ready-to-use spray, and the supplied directions call for mixing; that adds a preparation step but lets buyers make a solution for their treatment area. The 64-ounce bottle is the listed size.

Skip it if you want a product explicitly listed for newly seeded areas; Atticus Torocity Mesotrione Herbicide includes that use in its supplied details.

Choose this BASF concentrate if you want post-emergent crabgrass and broadleaf weed control with a stated rainfast window under an hour. It requires mixing, and its residual-control claim is up to 30 days, not an all-season treatment.

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 · Longest Residual

2. USA Supply Drive Crabgrass Killer

• Form: Liquid

Best for: Mature-crabgrass concentrate treatment.

Why it ranks #2: Its quinclorac concentrate targets crabgrass, including mature stages, and claims 30–45 days of residual control with rainfastness under an hour.

Control of crabgrass even at mature stages is the key stated distinction of this Drive concentrate, making it relevant when weeds have grown beyond their earliest stage. Its water-based quinclorac formula is described as rainfast in less than an hour and offers 30–45 days of residual weed control.

The listed target range includes grassy weeds such as foxtail, kikuyugrass, signalgrass, and torpedograss, plus broadleaves including clover, dandelion, and bindweed. That can suit buyers dealing with several weed types in one lawn. The proprietary water-based formula is described as supporting fast uptake, and rainfastness in under an hour can ease scheduling around weather. This is a 64-ounce liquid concentrate, so buyers should expect a mixing step; the supplied facts do not give a mixing rate.

Skip it if you want a stated mixing rate for calculating coverage; Agrisel QuinKill Max Weed Killer provides one for 1,000 square feet.

This concentrate fits buyers confronting mature crabgrass alongside the listed grassy and broadleaf weeds, especially when a short rainfast interval matters. Its supplied details do not include a mixing rate, so consult the label for application preparation.

Listed on Amazon as: Drive Crabgrass Killer Lawn & Turf, Post Emergent Grassy & Broadleaf Weed Control, Ingredient Quinclorac, 30 Day Residual, Herbicide, Concentrate 64 Ounce w/USA Supply Protective Gloves

#3 · Dedicated Crabgrass Control

3. Roundup Crabgrass Destroyer2

• Weight: 5 lb
• Form: Liquid

Best for: Fescue and bluegrass crabgrass control.

Why it ranks #3: This 64-ounce lawn product targets crabgrass and grassy weeds to the root, with listed application on four named turf types.

Roundup for Lawns Crabgrass Destroyer2 names Kentucky bluegrass, fine fescue, perennial ryegrass, and tall fescue as compatible grasses, giving owners of those lawns a defined fit. Its post-emergent liquid targets crabgrass and other grassy weeds, with best results tied to early weed growth.

The product is listed for actively growing weeds, with early growth stages identified as the best application timing; that helps buyers plan treatment before crabgrass matures. The stated daytime temperature window is 45°F to 90°F, a concrete condition to check before applying. Its 64-fluid-ounce container is a liquid, and the product is described as killing crabgrass and grassy weeds to the root. The supplied safety information also says not to reapply within three weeks and not to apply if rain is expected within 24 hours.

Skip it if you want a product with a stated rainfast interval under an hour; BASF Drive XLR8 Crabgrass Killer lists that feature.

This is a fit for owners of the listed bluegrass or fescue lawns treating actively growing crabgrass in the stated temperature window. Check grass compatibility and weather first, and observe the three-week restriction between applications.

Listed on Amazon as: Roundup for Lawns Crabgrass Destroyer2, 64 fl. oz.

#4 · Broad Weed Coverage

4. Spectracide Weed Stop Concentrate

• Weight: 2.3 lb
• Form: Liquid

Best for: Broad weed control with a rain window.

Why it ranks #4: The concentrate controls listed crabgrass among more than 470 weed types and is described as rainproof after three hours.

Control of more than 470 listed weed types, including crabgrass, makes Spectracide Weed Stop a broad-target choice for lawn treatment. Its rainproof claim applies when rainfall or watering occurs three hours after application, giving buyers a specific interval to work into their schedule.

The product is intended to control listed weeds without harming the lawn when used as directed, while its target examples include crabgrass, dandelion, chickweed, clover, and yellow nutsedge. That combination may suit buyers managing mixed weed problems rather than crabgrass alone. The guidance says to apply when crabgrass first appears and when daytime temperatures are between 45°F and 90°F. Bermudagrass may show temporary yellowing or discoloration, with full recovery expected according to the supplied details.

Skip it if you need rainfastness in less than an hour; BASF Drive XLR8 Crabgrass Killer lists a shorter rainfast interval.

Choose Spectracide if you want a concentrate for crabgrass plus a broad range of listed lawn weeds and can schedule around its three-hour rain window. Bermudagrass owners should account for possible temporary discoloration.

Listed on Amazon as: Spectracide Weed Stop for Lawns Plus Crabgrass Killer Concentrate, 32 Oz

#5

5. Atticus Torocity Mesotrione

• Weight: 8 oz
• Form: Liquid

Best for: New-seeding and established-turf flexibility.

Why it ranks #5: Its 40% mesotrione offers pre- and post-emergent activity for grassy and broadleaf weeds, and the bottle includes a pre-marked measuring syringe.

Its stated pre- and post-emergent activity gives Atticus Torocity Mesotrione Herbicide flexibility across prevention and treatment, including newly seeded and established turf. The concentrate contains 40.0% mesotrione, the same active ingredient as Tenacity according to the supplied product details, and includes a pre-marked measuring syringe.

Torocity’s pre- and post-emerge activity lets buyers consider it for both preventing weeds and addressing emerged weeds, rather than choosing solely by timing. The supplied details specifically identify newly seeded areas as well as established turf, broadening its stated lawn-use fit. A pre-marked syringe supports measuring the liquid concentrate, which can make preparing an application more straightforward. The 8-ounce bottle is compact, though the supplied information does not specify coverage or an application rate.

Skip it if you need a stated rainfast window under an hour; BASF Drive XLR8 Crabgrass Killer lists that timing.

Torocity suits buyers seeking one mesotrione concentrate for pre- and post-emergent use, including newly seeded areas. Its syringe helps with measuring, but the supplied details leave coverage and application-rate planning to the product label.

Listed on Amazon as: Atticus Torocity Mesotrione Herbicide (8oz) – (Compare to Tenacity)

#6 · Seeding-Compatible

6. The Andersons Meso 4 SC

• Form: Liquid

Best for: Seeding-compatible mesotrione option.

Why it ranks #6: This mesotrione product offers pre- and post-emergent control, lists crabgrass among more than 50 weeds, and is described for use when seeding.

The Andersons Meso 4 SC is listed for pre- and post-emergent weed control and can be used when seeding or overseeding, with fine fescue as the stated exception. That combination gives lawn renovators a specific mesotrione option for preventing weeds and treating existing ones around new grass growth.

Its stated pre-emergent action stops weeds from growing, while post-emergent use kills weeds after they appear; those two roles can help buyers plan around different weed stages. The product is listed for more than 50 common broadleaf and grassy weeds, including crabgrass, clover, dandelion, foxtail, ground ivy, henbit, and nutsedge. A bottle and syringe are included, supporting measured application preparation. Fine fescue is excluded from the seeding-safety claim, so that boundary matters when selecting a seed blend.

Skip it if you are seeding fine fescue; Liquid Harvest Mesotrione is listed for fine fescue, though its supplied facts do not make the same seeding claim.

Meso 4 SC suits buyers managing weeds while seeding or overseeding, provided the seed blend does not include fine fescue. Its pre- and post-emergent uses cover different weed stages, with crabgrass among more than 50 listed targets.

Listed on Amazon as: The Andersons Meso 4 SC – Mesotrione Pre-Emergent and Post-Emergent Weed Control 8 fl. oz.

#7

7. Liquid Harvest Mesotrione

• Weight: 8 oz
• Form: Liquid

Best for: Mesotrione for broad turf selection.

Why it ranks #7: The concentrate lists crabgrass among its targets and covers pre- and post-emergent use, but full weed death may take two to three weeks.

A list of 46 target broadleaf and grassy species, including crabgrass, gives Liquid Harvest Mesotrione a wide stated target range. The concentrate is also listed for several turf grasses, including Kentucky bluegrass, centipede grass, buffalo grass, and tall fescue, giving buyers specific compatibility details to consult.

Mesotrione is described as absorbing and starting work upon application, while full weed death may take two to three weeks; that distinction helps set expectations after treatment. The product’s stated target list spans crabgrass and other broadleaf and grassy weeds, supporting use where the lawn has more than one weed concern. Activation requires water, and the supplied directions call for applying 0.15 inches if rainfall does not occur within 10 days. That adds a watering check to the application workflow.

Skip it if you need a stated rainfast period under an hour; BASF Drive XLR8 Crabgrass Killer specifies that timing.

Liquid Harvest suits buyers who want mesotrione for crabgrass and a broad stated weed list across the listed turf types. Plan around its water-activation requirement and allow the stated two-to-three-week period for full weed death.

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

#8

8. Agrisel QuinKill Max

• Weight: 16 oz
• Form: Liquid

Best for: Measured liquid treatment for lawn weeds.

Why it ranks #8: Its supplied directions give a treatment rate of 0.5–1.45 fluid ounces per gallon for 1,000 square feet, but do not specify its active ingredient.

A stated mixing range of 0.5–1.45 fluid ounces per gallon for 1,000 square feet gives Agrisel QuinKill Max buyers a concrete starting point for calculating a treatment. This 16-ounce liquid weed killer is presented for preventative or curative treatment, so the supplied directions address both timing approaches.

The supplied facts advise measuring the area first, then calculating how much solution to mix; that workflow can help buyers scale preparation to the lawn rather than guess at treated square footage. The stated rate range—0.5–1.45 fluid ounces per gallon for 1,000 square feet—provides a quantity and coverage reference, while the label remains the source for complete application rates. Its liquid form suits mixing, but the supplied details do not identify particular turf types or a rainfast interval.

Skip it if you need named turf compatibility and a rainfast interval; BASF Drive XLR8 Crabgrass Killer lists rainfastness in less than an hour.

Consider QuinKill Max if you are comfortable measuring lawn area and mixing a liquid solution using its stated rate range. The supplied facts leave turf compatibility and rain timing unspecified, so check the label before choosing it for a particular lawn.

Listed on Amazon as: Agrisel QuinKill Max Weed Killer, Lawn-Friendly, Pet Safe, 16 Ounces

#9

9. Fertilome Weed-Out Pro Turf

• Weight: 26 lb
• Form: Granule

Best for: Lawn feeding with crabgrass prevention.

Why it ranks #9: This granular product is for pre-emergent crabgrass control, stopping germination rather than serving the search for emerged crabgrass treatment.

A 25-0-4 fertilizer formula combines lawn feeding with broadleaf weed control and pre-emergent crabgrass prevention, giving ferti-lome Weed-Out Pro Turf a dual lawn-care role. The granular product treats up to 10,000 square feet per 26-pound bag, providing a stated coverage reference for planning an application.

The product controls more than 250 broadleaf weeds while stopping germination of crabgrass and other listed grassy weeds, so its stated crabgrass role is preventive rather than post-emergent. Its 25% nitrogen, 0% phosphate, and 4% soluble potash formula also feeds the lawn in the same application. Established lawns may receive a single or split application in spring, early summer, or fall, according to the supplied facts. The listed compatible grasses include Kentucky bluegrass, Bahia, Bermuda, and fescue.

Skip it if you need to kill crabgrass that has already emerged; BASF Drive XLR8 Crabgrass Killer is listed for post-emergent control.

Ferti-lome fits owners of established lawns seeking granular feeding, broadleaf control, and prevention of crabgrass germination in one application. It is not a treatment for emerged crabgrass, so choose a post-emergent product for visible weeds.

Listed on Amazon as: Fertilome (10928) Weed-Out Pro Turf 25-0-4 Broadleaf + Crabgrass, 26 lbs