Preen Vegetable Garden Weed Preventer is an organic herbicide that can be used in your vegetable beds any time during the growing season. According to Preen.com, it controls weeds such as clover, crabgrass, lambsquarters and plantain.
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.