I for one am looking forward to warmer temperatures, but along with these warmer temperatures the not so lovely crabgrass rears its ugly head. Crabgrass is a summer annual grass that germinates in the spring. It competes with lawn grasses but grows faster, giving your lawn a bad look even before your lawn needs its first mow. To eliminate crabgrass seed germination you will need to apply pre-emergent herbicides.  Since germination starts early spring  you will need to apply the pre-emergent just as the ground temperatures start to warm (typically late February to  early March). Pre-emergent herbicides work by creating a protective seal around the plants and eliminate any chance of growth. Because pre-emergent takes action only against the seeds, it does not eliminate pre-existing perennial weeds with deep, extensive roots from returning.  This is where post emergent herbicides come into play. Post-emergent should be applied 6 weeks after the pre-emergent treatment. Post-Emergent attack weeds in a much different manner from the germination prevention of pre-emergent herbicides. Post-emergent weed killers travel down the stalk of the plant and into the root system, killing weeds after they’ve already started growth above the ground. So the Pre & Post emergents work together to ensure you have a beautiful, weed free lawn


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