Answer: These are annuals that are best controlled by using pre-emergent herbicides. Some success on seedlings less than two weeks old has been reported by the USDA using typical vinegar purchased from stores, which is 5 percent acetic acid. Standard herbicides that are effective include the product sold by Bayer Advanced under the name Bermudagrass Control for Lawns. This product will control crabgrass, foxtail, barnyardgrass and field sandbur in cool-season (bluegrass, fescue, ryegrass) lawns. It should NOT be used on buffalograss, bermudagrass or zoysiagrass lawns. Try to thicken your lawn with timely fertilization and mowing to keep new eeds from germinating.
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