Selective herbicides are toxic to weeds without damaging your grass, says the University of California Integrated Pest Management Program (IPM). Examples are 2,4-D, which targets only broadleaf plants and not grasses, and pendimethalin, which controls crabgrass as it germinates but does not injure established turfgrass.
About this Author
Aileen Clarkson has been an award-winning editor and reporter for more than 20 years, earning three awards from the Society of Professional Journalists. She has worked for several newspapers, including "The Washington Post" and "The Charlotte Observer." Clarkson earned a Bachelor of Arts in journalism from the University of Florida.