There are numerous crabgrass preventers on the market, both pre-emergent and post-emergent. When people hear the term weed prevention, they usually think of pre-emergent herbicides, which are meant to eliminate weeds before they begin growing. These herbicides often contain chemicals such as benefin, oxadiazon, prodiamine, and several others.

While these crabgrass preventers have proven to reduce the amount of crabgrass and other weeds that grow on people's lawns, they are far from 100 percent effective. Pre-emergent herbicides must be applied before crabgrass begins to germinate, which occurs when the soil four inches below the surface reaches somewhere between 53° and 58° F. If you apply a pre-emergent when the soil reaches 50° F, for example, an unexpected frost that occurs before the soil reaches optimal crabgrass germination temperature can render the preventive herbicide useless.

Lawn fertilizers that promote the growth of dense turf can significantly reduce the amount of crabgrass that grows in a yard. Fertilizer does not kill crabgrass. Rather, it makes the grass grow, leaving little room in the soil for crabgrass roots. Providing grass with plenty of water and regularly mowing the lawn keeps the turf healthy, thereby making it difficult for crabgrass to grow.

Post-Emergent Crabgrass Preventers by The Crabgrass Alert Company - If you reside in a region where crabgrass flourishes, it may not be possible to completely eliminate this persistent weed. However, here at The Crabgrass Alert Company we offer a post-emergent herbicide called Crabgrass Killer that will prevent young weeds from maturing and planting seeds. By applying our product during the early stages of a weed's life cycle, you can take control of your lawn and significantly reduce the amount of crabgrass in your yard.

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