![]() A product labeled as a “grassy weed killer” may or may not control crabgrass, and it may or may not be rated for use in the area you plan to apply it. Selective herbicides control specific weed categories, like “grassy weeds” or “broadleaf weeds.” The ingredients in these kinds of weed killers should be safe for nontarget plants like lawn grass while killing target plants like dandelions and crabgrass.Īlways read labels on selective herbicides to be sure they will work for you. Herbicides come as either selective or nonselective formulas. Consider the options below before selecting the best crabgrass killer for your needs. A final part of the decision boils down to how many square feet you need to treat. Do you want a product to kill several types of weeds or target crabgrass specifically? Will you apply the herbicide in the growing season or during its dormant season? Homeowners should consider whether they want to kill crabgrass in an established lawn or a recently seeded one. Selecting the best crabgrass killer for your lawn depends on several factors. What to Consider When Choosing the Best Crabgrass Killer Again, it might take multiple applications to kill weeds like crabgrass, depending on the time of year, weather conditions, weed maturity, and other site-specific conditions. The pre-emergent halts germination that has not yet occurred while the post-emergent herbicide kills the existing weeds. ![]() Mature weeds might require multiple applications, which can also stress the lawn or other plants in the area.įor weedy lawns, the best strategy combines pre-emergent and post-emergent herbicides for a full attack. They prove most effective for tough-to-kill weeds like crabgrass if applied when the weed is young and tender. Post-emergent herbicides kill weeds that are present (after they have emerged from the seed). Pre-emergent herbicides have a defined effectiveness period, so it might become necessary to apply pre-emergent herbicides several times per season to keep the area weed-free.īob Vila has partnered with Sunday to get your lawn exactly what it needs to thrive. In areas with long growing seasons, crabgrass can germinate for a long season as well. Applying pre-emergents after the seeds germinate will fail at controlling the target weed. If the herbicide goes on too early, before the soil temperature warms up enough, the pre-emergent will dissipate before it can complete the job. Homeowners must apply the herbicide when the weed seed is just about ready to germinate. The timing of the pre-emergent application is very important. Pre-emergents do not kill existing weeds. When properly applied, they do the job of controlling annual weeds-those that grow from seed each year and then die at the end of the growing season. Pre-emergent herbicides, or weed preventers, stop weed seeds from germinating. However, it also depends on the time of year that you plan to tackle the weed. The best overall product will take care of crabgrass and other weeds that are choking out your lawn. The preventive type keeps seeds from germinating and the other type kills mature plants. BEST FOR ZOYSIA GRASS: Ortho Weed Be Gon Plus Crabgrass Control Concentrate.BEST FOR CENTIPEDE GRASS: SOUTHERN AG ATRAZINE St.BEST FOR FLOWER BEDS: Preen Garden Weed Preventer.BEST POST-EMERGENT: BASF Drive XLR8 Crabgrass Herbicide. ![]() BEST PRE-EMERGENT: Scotts Halts Crabgrass and Grassy Weed Preventer.BEST BANG FOR THE BUCK: Spectracide 511072 Weed Stop for Lawns + Crabgrass.BEST OVERALL: Preen Lawn Crabgrass Control.Read on for our guide to navigating the available options and our top recommendations for the best crabgrass killers. It favors the thin and bare spots on your lawn.īut, the best crabgrass killer for your lawn will depend on when you apply the product and how bad your crabgrass infestation gets.The weed can grow vigorously in hot, dry conditions.A single crabgrass plant can produce 150,000 seeds during the growing season.Ungerminated seeds live in the soil for up to 30 years before sprouting.It germinates when soil temperatures reach between 55 and 65 degrees Fahrenheit, the average temperature during the spring and fall seasons in most areas.When it comes to battling crabgrass on the lawn, the odds are stacked in the weed’s favor: Crabgrass gets its name from how it grows-low to the ground with stems that radiate out from the center of the grass clump, resembling crab legs.
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