Crabgrass is one of the most aggressive and frustrating lawn weeds homeowners face.
The most effective way to deal with crabgrass is to use the right herbicide at the right time. Some products are designed to kill crabgrass after it appears (post-emergent), while others prevent seeds from germinating (pre-emergent).
Below are five of the best crabgrass killers commonly available.
Crabgrass Killers
1. BioAdvanced All-In-One Lawn Weed and Crabgrass Killer
BioAdvanced All-In-One is a powerful post-emergent herbicide designed to eliminate crabgrass and a wide range of other lawn weeds. It is formulated to kill weeds down to the root while protecting common turfgrass varieties when used as directed.
Key Features:
- Kills crabgrass and more than 200 broadleaf and grassy weeds
- Systemic action that targets weeds at the root level
- Rainproof formula after application
- Concentrated solution suitable for large lawn areas
- Safe for most common cool-season and warm-season grasses
This product is ideal for homeowners dealing with visible crabgrass infestations who want fast, reliable results.
2. Spectracide Weed Stop for Lawns Plus Crabgrass Killer
Spectracide Weed Stop for Lawns Plus Crabgrass Killer is a versatile concentrate that controls a broad range of lawn weeds without damaging grass when applied correctly. It is well known for its extensive weed coverage and value per treatment area.
Key Features:
- Controls hundreds of weed types, including crabgrass
- Kills weeds down to the root to prevent regrowth
- Suitable for use on established lawns
- Concentrated formula treats large lawn areas
- Designed to be lawn-safe when label directions are followed
This option works well for homeowners who want one product to manage both crabgrass and common broadleaf weeds.
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3. BASF Drive XLR8 Crabgrass Killer
BASF Drive XLR8 is a professional-grade crabgrass killer often used in residential lawns, commercial landscapes, and turf management. It is especially effective against mature crabgrass plants and provides extended control after application.
Key Features:
- Targets crabgrass, foxtail, signalgrass, and other grassy weeds
- Provides residual weed control for several weeks
- Water-based formulation for easy mixing and application
- Effective on both young and mature crabgrass
- Approved for use on many cool-season and warm-season turf types
This product is best suited for those seeking long-lasting crabgrass control or dealing with stubborn, established weeds.
4. Ortho Weed B Gon Plus Crabgrass Control
Ortho Weed B Gon Plus Crabgrass Control is a popular lawn herbicide available in both concentrate and ready-to-use formats. It is designed to eliminate crabgrass and other common weeds while maintaining lawn health.
Key Features:
- Kills crabgrass along with many broadleaf weeds
- Absorbed through leaves and moves to the roots
- Available in multiple application formats
- Safe for most lawn grasses when applied correctly
- Effective for spot treatment or full-lawn applications
This product is ideal for homeowners who want flexibility in application and reliable weed control without specialized equipment.
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5. Bonide Crabgrass Weed Killer (Granular)
Bonide Crabgrass Weed Killer is a granular option that offers both preventive and early post-emergent control. Unlike liquid sprays, granular products are applied with a spreader, making them easier for some homeowners to use.
Key Features:
- Prevents crabgrass seed germination and controls young plants
- Granular formulation for even lawn coverage
- Suitable for use early in the growing season
- Covers medium to large lawn areas
- Can be used as part of a seasonal weed control program
This option is best for homeowners who prefer spreader applications and want to reduce crabgrass before it becomes established.
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How to Choose the Right Crabgrass Killer
Choosing the right crabgrass killer depends on the stage of growth and the condition of your lawn. If crabgrass is already visible, a post-emergent herbicide is necessary. Products like BioAdvanced, Spectracide, BASF Drive XLR8, and Ortho Weed B Gon are effective in killing existing plants.
If prevention is your goal, granular products or pre-emergent treatments applied in early spring are the best choice. These prevent crabgrass seeds from sprouting and reduce future infestations.
It is also important to consider your grass type. Always read the product label to confirm compatibility with your lawn, as some herbicides may not be suitable for certain turf varieties.
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Tips for Effective Crabgrass Control
- Apply pre-emergent products early in the season before crabgrass seeds germinate
- Treat young crabgrass plants early for better results
- Avoid mowing immediately before or after applying post-emergent herbicides
- Maintain a thick, healthy lawn to naturally suppress weeds
- Follow label instructions carefully to avoid lawn damage
Proper lawn care practices combined with the right herbicide can significantly reduce crabgrass problems over time.
Final Thoughts
Crabgrass can quickly take over a lawn if left untreated, but the right product makes control manageable. Whether you choose a professional-grade concentrate, a versatile lawn spray, or a granular preventive treatment, consistency and proper timing are key.
The five crabgrass killers listed above offer effective solutions for different lawn sizes, weed severity levels, and application preferences. By selecting the right product and applying it correctly, you can restore your lawn’s appearance and keep crabgrass under control season after season.
