The best crabgrass killers for 2026, ranked. Pre-emergent preventers and post-emergent treatments tested on Central Plains lawns.
Our Top Pick
Barricade (prodiamine) is our top pre-emergent pick for longest-lasting crabgrass prevention. For killing active crabgrass, Drive XLR8 (quinclorac) provides the most reliable selective post-emergent control.
#1
Barricade 65WDG (Prodiamine)Our pick
Coverage: 43,560 sq ft (1 acre) at standard rate
Professional-grade pre-emergent with the longest residual control of any crabgrass preventer, up to 6 months from a single application. Prevents crabgrass, goosegrass, and foxtail. Safe on all common cool-season and warm-season grasses.
Pre-emergent that also provides early post-emergent control on crabgrass that just germinated (up to the 1-tiller stage). The only pre-emergent with a forgiveness window if you apply slightly late. Liquid formulation for spray rigs.
Consumer-grade granular pre-emergent with pendimethalin. Easy to apply with a broadcast spreader. Widely available at hardware stores. Shorter residual than professional products (3 to 4 months) so a split application may be needed for full-season control.
The most effective selective post-emergent for killing crabgrass already growing in cool-season lawns. Kills crabgrass without harming bluegrass, fescue, or ryegrass. Requires a surfactant for best results. Professional-grade concentrate.
Consumer-grade ready-to-spray that combines quinclorac (for crabgrass) with 2,4-D and dicamba (for broadleaf weeds). Convenient all-in-one product for homeowners who want to treat crabgrass and broadleaf weeds in a single pass.
We evaluated crabgrass control products based on active ingredient effectiveness, length of control, safety on common cool-season grasses, ease of application, and cost per 1,000 square feet. Pre-emergent and post-emergent products are ranked separately because they serve different purposes. Pre-emergent stops crabgrass before it germinates. Post-emergent kills crabgrass already growing in your lawn.
In our experience managing lawns across the Omaha metro since 1991, the single biggest factor in crabgrass control is timing, not product choice. The best product applied at the wrong time fails. An average product applied at the right time (soil at 55 degrees) succeeds.
How We Tested
Products evaluated on active ingredient research, label coverage claims, cool-season turf safety, application ease, and real-world results across 30+ years of lawn management in the Central Plains. Prices checked April 2026.
Frequently Asked Questions
What is the best product to kill crabgrass?
For prevention, prodiamine (Barricade) provides the longest control. For killing active crabgrass, quinclorac (Drive XLR8) is the most effective selective option. The right product depends on whether you're preventing crabgrass before it grows or treating an existing infestation.
When should I apply crabgrass killer?
Pre-emergent: when soil reaches 55 degrees at 2 inch depth (mid to late April in the Central Plains). Post-emergent: when crabgrass is young with fewer than 4 tillers, typically June to July. Mature crabgrass with seed heads is very difficult to kill.
Can I use pre-emergent and post-emergent at the same time?
Yes. Pre-emergent prevents new crabgrass from germinating while post-emergent kills plants that already broke through. They work through different mechanisms and don't interfere with each other. Apply pre-emergent first, then spot-treat escapes with post-emergent.
Is professional-grade crabgrass preventer worth the extra cost?
Usually yes. Professional products like Barricade last up to 6 months from one application. Consumer products last 3 to 4 months and may need a second application. The per-square-foot cost of professional products is often lower despite the higher upfront price.
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