What is the best way to control crabgrass in my lawn?

Crabgrass is a summer annual weed that comes up from seed every spring. UT Extension Agent Joseph Seago describes how crabgrass grows and gives ways to discourage it. He also talks about chemicals that can be used to control it.
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Related Videos:
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Pre-Emergent Herbicides

Related Resources:
Controlling Crabgrass After It Emerges
Crabgrass Species Control in Turfgrass